Biodata Dr. J. S. Rao

CEO, Innovative Designs and Simulation Global Solutions President, The Vibration Institute of India Chief Editor, Journal Vibration Engineering and Technologies 1039, 2nd Cross, BEL Layout, Block II Bangalore 560097 +91 98453 46503 [email protected] Also Chief Science Officer (consulting) Altair Engineering India Pvt. Ltd., Bangalore 560103

Contents

Title Page Number

1. Experience 2 2. Education 2 3. Memberships of Scientific Bodies 3 4. Contributions to Scientific Community 3 5. Research Areas 5 6. Doctoral Theses 5 7. Review Work 6 8. Industrial Consultancy and Sponsored Work 6 9. Books 9 10. Awards 10 11. Congresses and Schools 11 12. National and International Seminars 14 13. Five Decades of Research Work 18 14. Journal Papers 31 15. Conference Papers 38 16. Contributions as Science Counselor 53

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1. EXPERIENCE

President Kumaraguru College of Technology, Coimbatore 2012-2016

Protem Chancellor

K L University, Vijayawada 2011-2012

Director GMR Energy Ltd., Bangalore 2000-2012

CEO, Dynaspede Integrated Systems, Bangalore 2004-2005

Chief Technology Officer, QuEST, Bangalore 2001-2004

Professor of Mechanical Engineering The University of New South Wales, Sydney, Australia 1996

NSC Research Chair Professor National Chung Cheng University, Chia-Yi, Taiwan 1994-96

Professor of Mechanical Engineering Inst. fur Mech., Gesamthochschule, Kassel, 1988

Sr. Technical Consultant, Stress Technology Inc., Adjunct Professor Mechanical Engineering Rochester , Rochester, NY, USA 1980-81

Professor of Mechanical Engineering Concordia University, Montreal, Canada 1980

Professor of Mechanical Engineering Inst. Nationale des Sciences Appliquees, Lyon, France 1980

Science Counselor Indian Embassy, Washington DC 1984-89

Indian Institute of Technology, Delhi Professor of Mechanical Engineering 1975-2000

Faculty 1960-70 Professor of Mechanical Engineering Indian Institute of Technology, Kharagpur 1970-75

Post-Doctoral Commonwealth Fellow University of Surrey, Guildford, England 1968-70

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2. EDUCATION

B.E. (Hons.) Andhra University 1960 M. Tech I.I.T., Kharagpur 1963 Ph. D I.I.T., Kharagpur 1965 D. Sc I.I.T., Kharagpur 1971

3. MEMBERSHIPS OF SCIENTIFIC BODIES

American Society of Mechanical - Fellow Indian National Academy of Engineering - Fellow Association for Machines and Mechanisms - Founder Member Indian Society Theoretical & Applied - Life Member Indian Society of Technical Education-Life Fellow Institution of Engineers (India) - Fellow United Children‟s Movement - Member

4. CONTRIBUTIONS TO THE SCIENTIFIC COMMUNITY

1. President – The Vibration Institute of India 1999 – 2. Chief Editor – Journal of Advances in Vibration Engineering and Journal of Vibration Engineering Technologies sponsored by IFToMM – The Vibration Institute of India; 2002 - 3. President - Association of Machines & Mechanisms 1983-1987 4. Chairman - IFToMM Tech Committee Rotor Dynamics 1983-90 and 2011 5. Chairman - IFToMM Commission on Conferences 1990 – 97 6. President - Indian Soc. of Theo. & Applied Mechanics - 1990-92 7. Member - IFToMM Executive Council 1984-91 8. Chairman - VI IFToMM World Congress 1983 9. Chairman - Rotor Dynamics Group ARDB Propulsion Panel 1991- 10. IFToMM Founding Father 1969 11. IFToMM Chief Delegate - 1969-1987 12. Member Delegate IUTAM from India- 1972-78 13. Vice-President Indian Soc. Theoretical & Applied Mechanics 1974-76 14. Editorial Secretary - ISTAM 1976-78 15. Member National Committee on Vibration and Noise Control 16. Member Review Committee for C-12 Cryogenic Engine Turbine Pump for GSLV 3rd Stage, LPSC, ISRO, Trivandrum 17. Member Editorial Board - Mechanism and Machine Theory 18. Associate Editor – Mechanism and Machine Theory 19. Member Editorial Board - International J of Engineering Analysis and Design 20. Member Structures & Dynamics Committee - ASME IGTI 21. Member Board of International Advisers Wiley Series in Design Engineering 22. Member Steering Scientific Committee - 9th IFToMM World Congress, Milan, 1995 23. Member International Steering Committee - International Conference on Theory and Applications of Robotics, CAD/CAM (TARC-95), Merida, Yucatan, Mexico

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24. Member Organizing Committee Indo-German Workshop on Mechanics, March 28-April 2, 1994 25. Member - Expert Panel, Turbo machinery Asia '94 Tutorial, International conference and Exhibition, July 1994, Singapore 26. 24. Member International Program Committee - International Conference on Mechanical Trans- missions and Mechanisms '97, Tianjin 27. Member International Scientific Advisory Committee for 6th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, 1996 28. Member - Distinguished Panel, Turbo power Asia '96 Conference July 1996, Singapore 29. Member of Advisory Committee Corporate R&D, BHEL, Hyderabad 30. Member of Advisory Committee Indian Institute of Petroleum, Dehradun 31. Member of Advisory Committee Central Railway Research Board, New Delhi 32. Member of Advisory Committee Ahmadabad Textile Industry Research Association, Ahmadabad 33. Member of Advisory Committee Central Mechanical Engineering Research Institute. Durgapur 34. Chairman - Orissa Academy of Sciences Awards Committee - 1996-97 35. Member Board of Governors, IIT Delhi - 1998-2000 36. Member International Steering Committee, International Symposium Extraordinary Machines and Structures in Antiquity, International Olympic Academy, Ancient Olympia, Greece, 16-18 September 1999 37. Co-Chairman, Steering Committee, The First International Conference on Vibration Engineering & Technology of Machinery, Bangalore, October 2000 38. Member - International conference program committee, International Conference on Mechanical Transmissions, 5-8 April 2001. Chongqing, China 39. Member - Steering Committee Asia-Pacific Conference on Systems Integrity and Maintenance (ACSIM) 40. Chief Delegate from India to ISO TC 108 41. Member - International Scientific Advisory Committee XXI Southeastern Conference on Theoretical and Applied Mechanics, Orlando, FL, May 2002 42. Member – Indo US Committee on Bio Technology set up by Prime Minister of India, 1984-89 43. Member – Indo US Committee on Microelectronics set up by Prime Minister of India, 1984-89 44. Member – Indo US Committee on Aerospace set up by Prime Minister of India, 1984-89 45. Member – Indo US sub commission on Science and Technology set up by India and US Governments, 1984-89 46. Member – Indo US Science and Technology Initiative set up by Prime Minister of India and President of the United States, 1984-89 47. Member - Scientific Committee for the 1st WSEAS-IASME Conference on ADVANCES IN MECHANICS AND MECHATRONICS, Udine, Italy, March 25-27, 2004 48. Co-Chairman, VETOMAC-III and ACSIM-2004, December 2004, New Delhi 49. Patron, IUTAM Symposium on Rotor Dynamics, 2009, New Delhi 50. Chairman Board of Studies in Nuclear Engineering for Jawaharlal Technological University Kakinada. 51. Co-Chairman, VETOMAC-V, 26-28 August, 2009, Huazhong University of Science and Technology, Wuhan, China 52. Co-Chairman, VETOMAC-VI, 15-17 December, 2012, New Delhi, India 53. Conference Chair, International Conference on Multi Body Dynamics, February 2011 54. Co-Chairman, VETOMAC-VII, 21-24 November, 2011, Shanghai, China

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55. Co-Chairman, VETOMAC-VIII, 3-6 September, 2012, Gdansk, 56. Co-Chairman, VETOMAC-IX, 21-23 September, 2013, Nanjing, China 57. Conference Chair – VETOMAC-X, 9-11 September 2014, Manchester, UK 58. Honorary Advisory Committee member - 2015 IFToMM World Congress, Taipei, Taiwan, Oct. 25-30, 2015 59. Contributed to the Indoor Stadium built in memory of my father JAMMI CHIKKA RAO in my alma-mater Government Engineering College, now JNTU, Kakinada. 60. Donated my entire library consisting of 16 racks to Kumaraguru College of Technology, Coimbatore.

5. RESEARCH AREAS

Vibrations, Turbomachine Blade Aero and Structural Dynamics, Rotor Dynamics, CFD, Life Estimation, Topology optimization, Bird Strike and Flutter, Fusion Reactor design, Gravitational Waves and influence on Earth

6. DOCTORAL THESES (Co supervisors indicated in brackets)

1. M. K. Khashu - Longitudinal Vibration of Stepped Bars - 1970 (B. M. Belgaumkar) 2. B. Kishor - Vibration Analysis of Plates on Viscoelastic Foundation -1971 3. R. J. Lalwani - Vibration and Noise Generated by Ball Bearings - 1972 4. D. K. Rao - Solution of Vibration Problems of Rods and Beams Using Refined Theories - 1973 5. S. Bharatha - Finite Deformations of Elastic Materials - 1974 (C. N. Kaul) 6. S. Banerji - Turbomachine Blade Vibration - 1975 7. M. Swaminadham - Vibration of Rotating Pre twisted Tapered Blades - 1975 8. E. Raghavacharyulu - Dynamics and Jump Characteristics of Cam Follower Systems - 1976 9. A. Mukherji - Effect of Tilt on Dynamic Behavior of Journal Bearing Systems - 1976 10. M. K. Ghosh - Dynamic Behavior of Externally Pressurized Multirecess Oil Journal Bearings - 1977 (B. C. Majumdar) 11. R. C. Kar - Stability of Non uniform Cantilever Beams subjected to Non conservative Forces - 1978 12. K. N. Gupta - Dynamic Analysis of Mechanisms containing Flexible Links- 1978 13. V. V. Satyanarayana - Dynamic Response of Bridge Girders of Electric Overhead Traveling Cranes due to Imperfect Rail Joints - 1978 (D. P. Ghosh) 14. K. Gupta - Vibration of Rotating Plates with Small Aspect Ratio - 1979 15. K. Balasubrahmanyam - Dynamic Characteristics of Cantilever Blades-1979 (S. V. Kulkarni) 16. P. N. Rao - Analysis of Boring Bar Vibration - 1980 (U. R. K. Rao) 17. S. S. P. Rao - Some Studies on Turbomachine Blade Dynamics and Response in Incompressible Flow - 1980 (V. Mukhopadhyay) 18. H. M. Jadvani - Vibration of Turbine Blades - 1982 (L. V. Prasad) 19. V. V. Ramana Rao - Unsteady Blade Forces in a Turbomachine - 1982 (V. Seshadri) 20. V. P. Agarwal - Identification, Classification and Isomorphism of Kinematic Chains and Mechanisms -1982 5 Dr. J.S. Rao

21. A. Cameron - Vibration Analysis of High Pressure Stage Packeted Rotor Blades - 1984 (G. S. Sekhon, Y. Nath) 22. P. V. Reddy - Coupled Bending Vibrations of Pre twisted Rotating Blades- 1984 (K. N. Gupta) 23. D. K. Gupta - Vibration Analysis of Fluid Submerged Blades - 1984 (C. V. Ramakrishna) 24. N. S. Vyas - Vibration, Stress Analysis and Fatigue Life Estimation of Turbine Blade - 1986 (K. Gupta) 25. M. A. W. Usmani - Interface Damping in Blade Attachment Region - 1986 (C. V. Ramakrishna) 26. K. V. Bhaskara Sarma - Unbalance Response and Study of Symmetric and Asymmetric Rotors - 1987 (K. Gupta) 27. K. V. S. Rao - Forced Vibration Response of Rotor Blade due to Aerodynamic Interaction in a Turbomachine Stage, 1995 (V. Seshadri) 28. Yung-Dann Yu - Dynamic Analysis of Rotating Blade with Frictional Damping, 1996 (T. N. Shiau and S. T. Choi) 29. Jer-Rong Chang - A Study on Dynamic Characteristics of Geared Rotor-Bearing System, 1997 (T. N. Shiau and S. T. Choi) 30. K. K. Rao - Vibratory Stress Analysis of Turbine Blades Using Shell Finite Elements 1997 (C. V. Ramakrishna and K. Gupta) 31. A. K. Singh – Last Stage LP Steam Turbine Blade Life Calculations 2001 (C. V. Ramakrishna and K. Gupta)

7. REVIEW WORK

Institution of Engineers (India); Aeronautical Society of India; Indian Society of Theoretical Applied Mechanics; American Society of Mechanical Engineers; Shock and Vibration Digest; Mechanism Machine Theory; National Science Foundation (USA); Defense Science Journal; Journal of Sound and Vibration; Australian Research Council; European Journal of Mechanics; ISROMAC; IFToMM; Intl Journal of Mechanical Sciences; International Journal of Advanced Engineering Informatics; Institution of Mechanical Engineers

8. INDUSTRIAL CONSULTANCY AND SPONSORED WORK

1. Twyflex Couplings, Twickenham, England - Analysis of Nonlinear Flexible Couplings in Marine Application (W Carnegie) 2. Garden Reach Workshops, Calcutta - i. Computer program for predicting the torsional vibration characteristics of diesel engine driven sets (D K Rao) ii. Experimental rig to determine stiffness of engine couplings and dampers (A S R Murthy) 3. Indian Railways, Kharagpur - Investigations into the failure of crankshafts of ZDM2 narrow gauge diesel locomotives in Nagpur (J R Banerji and B Bhattacharya) 4. Hindustan Machine Tools Ltd., Bangalore - Investigations into chatter of C 23 super cut lathe 5. Hindustan Steel Ltd., Rourkela - Structural vibration problem in sintering plant (N S Rao) 6. IBM Corporation, Bombay - Design of an anechoic chamber 7. Devgan Bros., Delhi/Heavy Vehicle Factory, Jabalpur - Testing of Shaktiman engine Lanchester dampers (N T Asnani)

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8. Bharat Heavy Electricals Ltd., Hyderabad - i. Development of high speed rotor dynamics test facility ii. The transient response of turbine alternator rotor systems under short circuiting conditions (D K Rao and K V Bhaskara Sarma) iii. Unbalance response of rotors (K V Bhaskara Sarma) iv. Vibration analysis and fatigue life estimation of steam turbine blades (K Gupta, N S Vyas) 9. Corporate R&D, Bharat Heavy Electricals Ltd., Hyderabad - i. Unsteady blade forces ii. System approach to vibration problems in rotating machinery (Y V K S Rao, K G Bhatia) iii. Tangential and coupled modes of packeted blades - Resonant response 10. K.G. Khosla Compressors Ltd., Delhi - i. Design analysis and bending vibrations of reciprocating compressor crankshafts (L V Prasad) ii. Torsional analysis of reciprocating compressors iii. Vibration measurements for health monitoring of reciprocating air compressors (P N Rao) 11. Engineers India Delhi/Indian Petro Chemicals Ltd., Baroda - Diagnosis of vibration and noise in detergent alkylate plant at IPCL Baroda (P N Rao and S Suryanarayana) 12. Stress Technology Inc., Rochester, N.Y., USA - i. Blade packet vibrations ii. Unsteady forces due to turbo machine stage interaction iii. Development of Modified Hydraulic analogy 13. Bharat Heavy Electricals Ltd., Hardwar - i. Unsteady blade lift forces of a turbo machine stage (A K Singh) ii. Evaluation of root damping in steam turbine blade (O P Sharma) 14. Washington Metropolitan Area Transit Authority, D.C., USA - Brake squeal noise problem in the under ground trains 15. Research Development and Standards Organization, Lucknow - i. Development of mathematical model for simulation of train action on heavy and long trains (E. Raghavacharyulu) ii. Train Consist dynamics (E Raghavacharyulu) iii. Critical speeds and vibration response of diesel electric locomotives (K N Gupta) iv. Validation of torsional response by tests (K N Gupta) 16. Hindustan Copper Ltd., Khetri - Health monitoring of a 3.5 MW diesel generator set and balancing of the generator rotor (P. N. Rao and K. Gupta) 17. Eicher Research Center, Delhi - Vibratory performance of Eicher tractor by tests (P N Rao) 18. Kirloskar Electricals Ltd., Bangalore - Predetermination of magnetic noise of large induction motors (S S Murty) 19. Bhakra Beas Management Board, Bhakra Nangal - i. Vibration analysis of modified runner blades (C. V. Ramakrishnan) ii. Studies on cracking of turbine runner blades in machines of Bhakra Right Bank power house (K N Gupta and C V Ramakrishnan) iii. Torsional stress measurements in generator shafts of Bhakra power house (K N Gupta and J M Gupta) 20. Electronics Corporation of India Ltd., Hyderabad - Seismic analysis of instrumentation for Narora atomic power plant (K. Gupta) 21. Universal Consortium of Engineers, Delhi - Investigations into the possible reasons of failure of the scaffolding structure in the STC building complex at Janpath (K. Gupta and K K Chowdhury)

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22. Gas Turbine Research Establishment, Bangalore - i. Non steady forces of GTX engine compressor rotor blades, forced vibration and stresses (V. Seshadri) ii. Rotor Dynamics of GTX engine low pressure and high pressure spools (K. Gupta) iii. Rotor Dynamics of GTX engine multi shaft including the effect of couplings (K. Gupta) iv. Natural frequencies and forced vibration response of large chord high twist compressor rotor blades (C. V. Ramakrishnan) v. Two dimensional investigation of flow in the combustion chamber of GTX engine (V. Seshadri) vi. Rotating stall studies on a compressor stage of GTX engine (P. B. Sharma and V. Seshadri) vii. HP compressor stage 1 rotor blade failures 23. Stress Technology Inc., Rochester/Brown Boveri Corporation, Baden, - Transient response and stability of symmetric and asymmetric rotors mounted on hydrodynamic bearings including nonlinearities (K. V. Bhaskara Sarma) 24. Triveni Engineering Corporation, New Delhi - Balancing of generator rotor and diagnosis of turbo alternator set at Shamli (P N Rao and V P Agarwal) 25. Aeronautical Research and Development Board, New Delhi - i. Vibration of turbine blades ii. Unsteady forces - blade response iii. Response of Bladed Disk assemblies (Y V K S Rao and E. Raghavacharyulu) iv. Estimation of Unsteady blade forces in aeroengines using Hydraulic analogy (V. Seshadri) v. Turbine Blade design for fatigue life (K Gupta) vi. Aeroengine blade and rotor dynamics (K. Gupta) vii. Combined Vibratory and Thermal Loads on Turbine Blades (S. R. Kale) viii. Software Development for Fatigue Life Estimation of Turbine Blades, Combined with IIT, Kanpur (N S Vyas) 26. Bharat Heavy Electricals Ltd., ARP Division, New Delhi Collapse/Buckling Loads of Thin Aluminum Tubes (Y. Nath) 27. Bharat Heavy Electricals Ltd., Failure Investigations of Turbine Generator - 236 MWe Narora Unit-1 Incident on March 31, 1993 (Guided and coordinated work in five BHEL Divisions) 28. Industrial Technology Research Institute, Hsinchu, Advisor on various projects 29. Tai power Co., Taipei, Life Estimation of Turbine Blades (N. S. Vyas and Liu De Shin) 30. Board of Research for Nuclear Sciences, Development Work on TG Sets of 220 MW NPP in the Areas of 1. Fatigue Analysis of LP Blades and 2. On-Line Diagnostics Systems (A. Chawla and R. K. Pandey) 31. Bharat Heavy Electricals Ltd., Crack Initiation of Giribata Hydraulic Runner Blades, 1997 32. Indo-Polish Project, Life Estimation of Bladed-Disc Assemblies, 1997 - 29. Department of Science and Technology - Development of Instrumentation System and Related Technologies for Condition Monitoring of Critical Rotating Machines for Generation of Electric Power, 1998 - (A. Chawla and S. Mukherji) 30. Indian Space Research Organization - Complete Dynamic Analysis of Cryo Pump for the IV Stage of GSLV - (A. K. Singh of BHEL ARP Div) 31. Crompton Greaves Corporation, Mumbai

Projects carried out within the private organizations in India and abroad are not included here.

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9. BOOKS (coauthors indicated in brackets)

1. Vibrations of Rotating Machinery, Part 2: Blading and Torsional Vibrations, The Vibration Institute, Clarendon Hills, Illinois, USA, 1981, (N. F. Rieger) 2. Rotor Dynamics (John Wiley and Sons, Wiley Eastern and Central Book Publishing Co.) - 1983 Revised and Enlarged Second Edition - 1991, Reprint 1994, Revised and enlarged Third Edition, New Age International, New Delhi, 1996 3. Theory and Practice of Mechanical Vibration (John Wiley and Sons Wiley Eastern and The Career Publication) -1984, Second Edition, New Age International, New Delhi 1999 - (K. Gupta) 4. Solution Manual for Theory and Practice of Mechanical Vibration - 1984 - (K. Gupta) 5. Mechanism and Machine Theory (John Wiley and Sons and Wiley Eastern) - 1989 - (R. V. Dukkipati) - Revised and enlarged edition - 1992 6. Solution Manual for Mechanism and Machine Theory - 1992 7. Turbomachine Blade Vibration (John Wiley and Sons and Wiley Eastern) -1991 8. Advanced Theory of Vibration (John Wiley and Sons, Wiley Eastern and Central Book Publishing Co.) - 1992, Reprint 1994 9. Turbomachine Unsteady Aerodynamics - New Age International and Wiley Eastern, 1994 10. Theory of Machines through Solved Problems - New Age International, 1996 11. Dynamics of Plates - Narosa and Marcel Dekker, 1998, Alpha Science, 2001 (UK) 12. Turbine Blade Life Estimation – Narosa, 1999 (India), Alpha Science, 2001 (UK) 13. Vibratory Condition Monitoring of Machines - Narosa, 1999 (India), CRC Press, 2000 (USA), Alpha Science, 2000 (UK) 14. History of Rotating Machinery Dynamics, Springer, 2011 15. Kinematics of Machinery through HyperWorks, Springer, 2011 16. Magneto Hydro-Dynamics and Heat Transfer in Liquid Metal Flows, chapter 4 in “Heat Transfer” Intech Publishers, 2011 (Hari Sankar), ISBN 978-953-307-317-0 17. 旋转机械动力学及发展, (History of Rotating Machinery Dynamics) translated into Chinese by Jiyuan Ye, China Machine Press, 2012, ISBN 978-94-007-1164-8 18. Man and His Quest for Energy, in print with Krishtel eMaging, Chennai, 19. Simulation Based Engineering in Fluid Flow Design, Springer, 2016 20. Simulation Based Engineering in Solid Mechanics, Springer, 2016 21. Hindu Temple Carts – Rathams a chapter in the book Findings in the History of Mechanical Engineering edited by Francesco Sorge and Giuseppe Genchi; Series History of Mechanism and Machine Science, Springer Publication 2015 (Babaji Raja Bhonsle and Bigil Kumar) 22. Universe and Earth – in print with Krishtel eMaging Publication, Chennai

Books Edited:

1. Mechanism and Machine Theory, Journal of International Federation of Theory of Machines and Mechanisms, Pergammon Press - v.12, 1977 2. VI IFToMM World Congress on Theory of Machines and Mechanisms, New Delhi, 1983, Wiley Publication, (K. N. Gupta) 3. Proceedings of IFToMM Technical Committee Sessions on Rotor Dynamics, New Delhi, 1983, (N. F. Rieger)

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4. Proceedings of IFToMM Technical Committee Sessions on Rotor Dynamics, Seville, 1987, (N. F. Rieger) 5. Proceedings of IFToMM Panel Discussion on Forced Vibration of Turbomachine Blades, Prague, 1991, (H. Irretier) 6. Status Report on Rotor dynamics in India, Aeronautical Research and Development Board, August 15, 1994 (K Gupta)

10. AWARDS

1. Best Paper award - Defense Science Journal - 1984. 2. Association of Scientists of Indian Origin in America - Award for Outstanding Scientific Contributions - 1985. 3. Award for significant contribution to Mechanical Engineering - American Society of Mechanical Engineers, Washington, DC - 1988. 4. First Occupant of BHEL Chair 1991- 98 5. Outstanding in Instruction of Mechanical Engineering, IIT Delhi - 1989 to 1992 6. Glimpses of Engineering Eminent Personality - Institution of Engineers (India) Platinum Jubilee Year Award 1994 7. Distinguished Leadership Award - American Biographical Institute - 1996 8. Silver Medal of Honor - 20th Century Award for Achievement - International Biographical Center, Cambridge, England - 1997 9. Honored by Association of Machines and Mechanisms (India) for Distinguished Services in the Area of Theory of Mechanisms/Mechanical Design and Technical Education and Honorary Life Membership - 1997 10. ISROMAC-7 Award for outstanding Research Contributions in the Area of Dynamics of Rotating Machinery - Pacific Center of Thermal-Fluids Engineering and 7th Intl. Symp on Transport Phenomena and Dynamics of Rotating Machinery, February 22-26, 1998, Honolulu, Hawaii 11. ANSYS User‟s Symposium 2001 First Prize (Jointly awarded) for following papers: 1. Solid Model Rotor Dynamic Studies for (a) Jeffcott Type Rotor, (b) Dual Rotor (co-author Veeresh Vastrad) 2. Estimation of Damping in Turbomachinery Blades (co-author Anil Saldanha) 12. Bharat Excellence award and Gold Medal 2002 – Friendship Forum of India 13. LSDYNA User‟s Symposium 2003 First Prize for the paper Bird Impact on Rotating Fan Blades (coauthored with S. Srinivas) 14. IFToMM award 2004 for fundamental contributions as one of the founding fathers in developing IFToMM and MMS, and in promoting the PC History 15. IFToMM Distinguished Service award 2004 16. Outstanding alumnus achievement award from College of Engineering Kakinada at its Diamond Jubilee Celebration, 2006 17. Emeritus Chairman of IFToMM Rotor Dynamics Technical Committee, announced in Vienna 2006 18. International of the Year for 2008, The International Biographical Center of Cambridge, England 19. Distinguished Mechanical Engineering Educator, Indian Society of Mechanical Engineers, 2008

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20. Aerotech 2008 award received from former President Abdul Kalam 21. 2009 TANA award for exceptional and outstanding contributions in the field of Engineering received from Governor of Illinois State Mr. Pat Quinn 22. Recognition from IMarEST - The Institute of Marine Engineering Science & Technology, London for courses on 1. Ship Dynamics and Failure Prediction - offered by Dr J.S. Rao and 2. Turbomachinery Dynamics and Failure Predication - offered by Dr J.S. Rao, as contributing to the Continuing Professional Development (CPD) needs of members of the IMarEST. 23. Distinguished Services Award conferred in recognition of tremendous services from IIT New Delhi at its Golden Jubilee Celebrations on its Foundation Day 27 January 2011 24. Honorary Membership award from IFToMM 22 June 2011 25. Distinguished Alumnus Award for Outstanding Achievements and Contributions, IIT Kharagpur on Diamond Jubilee Celebration and Convocation on 22 August 2011 26. Significant Contributions in Structural Dynamics award, International Conference on Structural Stability and Dynamics, 4-6th January 2012, Jaipur 27. Rated No. 1 in the Country in Tata McGraw Hill publication "100 Managers in Action" under the category "Technology Leadership and Systems Thinking". 28. Rashtriya Gaurav Award 2012, India International Friendship Society 29. Sir Isaac Newton Scientific Award of Excellence for 2012, American Biographical Institute. 30. Distinguished Expert of Jiangsu Engineering Technology Research Institute for Dynamic Environment Test of Suzhou Dongling Vibration Test Instrument Company, 2014 31. Life Time Achievement Award, 3rd World Conference on Science and Technology WCST-3, Kathmandu 27th September 2014. 32. Worldwide recognition: "JS Rao Medal in Vibration Engineering” is instituted to be awarded every year during International congresses of VETOMAC. This award will be scrutinized by a team of 6 researchers of international fame.

11. CONGRESSES AND SCHOOLS:

1. Indian Society of Technical Education - School of Vibrations, I.I.T., Kharagpur, 1968 2. 19th Annual Congress of Ind. Soc. of Theo and Applied Mechanics, Kharagpur, 1974 3. Symposium on Dynamics of Rotors, Ind. Soc. of Theo and Applied Mechanics, Benares, 1975 4. Stress and Dynamic Analysis of Machines, Indian Society of Mechanical Engineers, Delhi, 1976 5. School on Blade Packet Vibration, Bharat Heavy Electricals Ltd., Hyderabad, 1978 6. VI IFToMM World Congress on Theory of Machines and Mechanisms, New Delhi, 1983 7. Proc. IFToMM Technical Committee Sessions on Rotor Dynamics, New Delhi, 1983 8. 2nd Intl. Conf. Rotor Dynamics, Tokyo, 1986 (IFToMM RD Committee Chairman) 9. Proc. IFToMM Technical Committee Sessions on Rotor Dynamics, Seville, 1987 10. 3rd. Intl. Conf. Rotor Dynamics, Lyon, 1990 (IFToMM RD Committee Chairman) 11. Structural Dynamics and Aero elasticity, Course June, 1990, City University, London, England (Key speaker) 12. Structural Dynamics and Aero elasticity, Course June, 1991, City University, London, England (Key speaker) 13. Proceedings of Forced Vibrations of Turbomachine Blades, 8th IFToMM world congress, Prague, Aug. 26-31, 1991

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14. Session on Fracture, Fatigue and Life Analysis, 1992 ASME Intl. Gas Turbine and Aeroengine Congress, June 1-4, 1992, Cologne, Germany (Dr. A J Smalley Cochairman) 15. Flutter and Forced Vibrations of Turbomachine Blades, Course June 8-9, 1992, University of Kassel, Germany (Professor R. Henry, Professor H. Irretier Co speakers) 16. Analyzing and Solving Vibration Problems in Turbo machinery, Westinghouse Electric Corporation, Orlando, July 11-12, 1994, Orlando, USA 17. Analyzing and Solving Vibration Problems in Turbo machinery, Repeat Course to Murray Turbo machinery Division, (Burlington, Iowa), Orlando, July 13-14, 1994, Orlando, USA 18. Blades-Unsteady Forces, Vibrations, Damping, Resonant Stresses and Life Estimation, One-day course on 18 July 1994, Turbo machinery Asia '94 July 18-23, Singapore 19. Rotor Dynamics, Unsteady Blade Loading, Blade Heat Transfer and Blade Vibration of Turbomachines, Tai Power Company; Part I, 7-9, August 1995, Hengchun; Part II 17-18 August 1995, Taipei 20. Turbo machinery Rotor Dynamics, Industrial Technology Research Institute, Hsinchu, August 24-25, 1995 21. Rotor Dynamics, The University of New South Wales, Sydney, September 30 - October 4, 1996 22. Forced Vibration and Life Estimation of Turbine Blades, ASME Course May 31 - June 1, 1997, Orlando 23. Blade and Rotor Dynamics, June 10-12, 1997, INTEVEP, Caracas, Venezuela 24. Rotor Dynamics, October 23-24, 2000, Indian Institute of Science, Bangalore, India 25. Vibratory Condition Monitoring of Rotating Machines, March 7-9, 2001, Bruel & Kjaer, Schenck and Power Engineering Corporation, Singapore 26. Practical Aspects of Rotor Dynamics and On-line Condition Monitoring with Diagnostics, in continuation of ISROMAC-9, February 15-16, 2002, Hawaii, USA 27. Vibratory Based Condition Monitoring and Diagnostics, 26 September 2002, Third Asia-Pacific Conference on Systems Integrity and Maintenance, Cairns, Australia 28. Rotor Dynamics and Condition Monitoring, IFToMM Sixth International Conference on Rotor Dynamics, The University of New South Wales, October 4, 2002, Sydney, Australia 29. Practical Aspects of Rotor Dynamics and On-line Condition Monitoring with Diagnostics, December 14-15, 2002, Mumbai 30. Vibratory Diagnostics and Condition Monitoring of Rotating Machinery, August 12-15, 2003, Kula Lumpur Malaysia 31. Vibratory Diagnostics and Condition Monitoring of Rotating Machinery, March 29-31, 2004, City University, Hong Kong 32. Rotor Dynamics Course, July 30, 2004, The 5th Annual Australian Gas Turbines Conference, post conference workshop, Brisbane 33. Vibratory Diagnostics and Condition Monitoring of Rotating Machinery, November 22-24, 2004, Dubai 34. Vibratory Diagnostics and Condition Monitoring of Rotating Machinery, December 3-5, 2004, New Delhi 35. VETOMAC III and ACSIM 2004, Hotel Inter-Continental, The Grand, December 6-9, 2004, New Delhi 36. Vibratory Diagnostics, Condition Monitoring and Life Estimation of Rotating Machinery June 24-28 2006, Dubai

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37. Vibrations, Life Analysis and Condition Assessment for Power Plant Machinery, July 24-28 2006, Doosan Heavy Industries, Pusan, Korea 38. Implementing Effective On-Line Condition Monitoring and Diagnostics to Boost Performance of Turbomachinery and Prevent Catastrophic Failures, Pre-conference Master Class The 3rd Annual Conference Rotating Equipment 2006, Oil and Gas IQ, Kula Lumpur, 6 November 2006 39. Vibratory Diagnostics, Condition Monitoring and Life Estimation of Rotating Machinery June 10-15, 2007, Dubai 40. Lifing of Mechanical Components, October 22-26, 2007, The Qutub Hotel, New Delhi 41. Lifing of Mechanical Components, November 12-16, 2007, Altair Engineering, Bangalore 42. Lifing of Mechanical Components, December 4-6, 2007, Mahindra Engineering, Nasik 43. Lifing of Mechanical Components, May 19-23, 2008, Ashok Leyland, Chennai 44. Accelerating Turbomachinery Development, 3rd European HyperWorks Technology Conference 2009, Ludwigsburg Germany, 2 November 2009 (Pietro Cervellera, Alexander Koch) 45. Vibration and Fatigue Life Estimation – 30 Hour program for Altair Engineers November – December 2009 46. Metamodels in Crash Optimization, HTC 2010, Bangalore, August 4, 2010 47. Lifing and Optimization in HyperWorks with Basics, Gas Turbine Research Establishment, August 16-20, 2010 48. Lifing and Optimization in HyperWorks with Basics, KL University, Vijayawada, December 6- 10, 2010 49. Lifing of Mechanical Components, Gayatri Vidya Parishad College of Engineering, Visakhapatnam, July 27-31, 2011 50. Vibrations and Fatigue Life Estimation, The Szewalski Institute of Fluid Flow Machinery, Gdansk, Poland, 12-16 September 2011 51. Vibrations and Condition Monitoring, Tata Chemicals Ltd., Babrala, 1-3 February 2012 52. Fatigue and Failure Mechanics, Volvo-Eicher Research Center, Indore, May 22-24, 2012 53. Fatigue and Failure Mechanics, New Product & Technology Center (NEPTECH), Vietnam, 4-6 June 2012 54. Design Workshop, Kumaraguru College of Technology, Coimbatore, 4-8 February 2013 55. Design and Optimization, Malaviya National Institute Of Technology, Jaipur, 20-21 March 2013 56. One Day Workshop on Weight and Shape Optimization in Design, Kumaraguru College of Technology, Coimbatore, May 7 2013 57. Two Day Workshop on Promotion of Research, Jawaharlal Technological University, Kakinada, 9-10 May 2013 58. Weight and Shape Optimization, Indian Institute of Technology, Mandi, 21-22 June 2013 59. Four Day Workshop on Solid Mechanics, Kumaraguru College of Technology, Coimbatore, 4-7 July 2013 60. Weight and Shape Optimization, ASME 2013 International Design Engineering Technical Conferences (IDETC) and Computers and Information in Engineering Conference (CIE), August 4, 2013, Portland, OR, USA 61. Vibrations, Life, Optimization of Rotating Machinery, A Course to China Engineers in Rotating Machinery, Shanghai, China, 28-30 August 2013 62. Four Day Workshop on Automotive NVH, Kumaraguru College of Technology, Coimbatore, 28 January 2014

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63. Special Training Programme On Rotor Dynamics to Naval Science and Technology Laboratory, Visakhapatnam and Crompton Greaves, Mumbai, 7-10 April 2014 64. Rotor Dynamics, Crompton Greaves, Bhopal, 8 August 2014 65. , August 25-28, 2014, Kumaraguru College of Technology, Coimbatore 66. CFD through SBES, Kumaraguru College of Technology, Coimbatore, 13 October 2014 67. Weight and Shape Optimization in Design, Two Day Workshop, KCT, Coimbatore, December 9- 10 2014 68. Evolution of Modern Design Practices and Development of Enabling Software, Kumaraguru College of Technology, Coimbatore, June 27 2014 69. Workshop Suzhou Dongling Vibration Test Instrument Company, Suzhou, Shanghai 4-10 July 2014 70. Theory of Machines through 20th Century, October 2014, KCT, Coimbatore 71. Faculty Training, Center of Excellence in Advanced Design – CEAD, Kumaraguru College of Technology, Stress to Optimization and Fusion, Coimbatore 2-6 February 2015 72. Vibration in Rotating Machines, IIT, Dhanbad, 16 March 2015 73. Optimization Techniques in Mechanical Systems Design, PESIT/PES University, Bangalore, 23 March 2015 74. 21st Century Simulation Based Engineering Science Approach to Academic Institutions, Symposium on Modern Approach to basic courses using SBES and HPC, April 2015, Rajasthan University, Jaipur 75. Optimal Design and Reliability Design, Fatigue Problems of Rotating Machines, Seminar organized by SJTU and Dongling ZXLearning, Shanghai, China, 25 May 2015 76. Optimization and Lifing in Design, One Day Course to China Engineers Organized by SJTU and Dongling, ZXLearning, Shanghai, China, 26 May 2015 77. Workshop on Rotor Dynamics, Diagnosis and Simulation Based Engineering Science, G V P College of Engineering, Visakhapatnam July 30 to August 1 2015, 78. Concepts on Vibration and Fatigue, Cameron, Coimbatore, 8-9 October 2015. 79. CFD Current Topics, Kumaraguru College of Technology, Coimbatore, 10 December 2015 80. Simulation Based Engineering Science – A Scientific Approach to Engineering, Two Day Workshop, IIT Delhi, 18-19 December 2015 81. Two Day Workshop on Concepts of Vibration and Fatigue, 5-6 January 2016 Rourkela 82. Two Day Workshop on Vibroengineering in Rotating Equipment, International Workshop on Engineering Excellence, December 8-9 2016, Bangalore 83. Vibration Analyst Levels 1 and 2 Certification Programs to Coastal Gujarat Power Limited (CGPL), Tata Power Company January 9 to 17 2017. 84. Life Estimation and Exact Time of Failure of Last Stage Steam Turbine Blades, 2-4 August 2017, Brisbane

12. NATIONAL AND INTERNATIONAL SEMINARS

1. Central Mechanical Engineering Research Institute, Durgapur 2. National Aeronautical Laboratory, Bangalore 3. Institution of Engineers India, Bangalore 4. Indian Institute of Technology, Madras 5. International Center Mechanical Sciences, Udine, Italy

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6. University of Palermo, Italy 7. Institute of Motors, Naples, Italy 8. University of Torino, Italy 9. Indian Institute of Technology, Bombay 10. Bharat Heavy Electricals, Hardwar 11. University of Roorkee 12. Bharat Heavy Electricals, Bhopal 13. Bharat Heavy Electricals, Hyderabad 14. Indian Institute of Technology, Kanpur 15. Laval University, Quebec city, Canada 16. University of Toronto, Canada 17. University of Illinois, Urbana, USA 18. Cornell University, Ithaca, USA 19. Technical University, Hannover, Germany 20. Central Water Power Research Institute, Pune 21. Indian Institute of Science, Bangalore 22. Rochester Institute of Technology, Rochester, NY, USA 23. Concordia University, Montreal, Canada 24. Stanford University, Palo Alto, CA, USA 25. University of California, Berkeley, USA 26. Polish Academy of Sciences, Warsaw, Poland 27. Technical University, Lodz, Poland 28. Technical University, Warsaw, Poland 29. Technical University, Gdansk, Poland 30. National Institute of Applied Sciences, Lyon, France 31. Norwegian Technical University, Trondheim, Norway 32. Iowa State University, Ames, USA 33. University of Florida, Gainesville, USA 34. National Research Council, Ottawa, Canada 35. Illinois Institute of Technology, Chicago, USA 36. University of Calgary, Canada 37. United Technologies Research Center, Hartford, CT, USA 38. G. B. Pant Agricultural University, Pantnagar 39. Kirloskar Pneumatic Company, Pune 40. Larsen & Toubro Company, Bombay 41. NASA Lewis Research Center, Cleveland, OH, USA 42. College of Military Engineering, Pune 43. University of Bangalore, Bangalore 44. Tata Electric Locomotive Company, Pune 45. University of Newfoundland, St.John's, Canada 46. Gas Turbine Research Establishment, Bangalore 47. Naval Science Technological Laboratory, Visakhapatnam 48. University of Syracuse, NY, USA 49. University of Arizona, Tucson, USA 50. Howard University, Washington, D.C., USA

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51. Virginia Polytechnic State University, Blacksburg, USA 52. Penn. State University, State College, USA 53. Michigan State University, East Lansing, USA 54. Arizona State University, Tempe, USA 55. Politechnico de Milano, Milan, Italy 56. Georgia Institute of Technology, Atlanta, USA 57. University of Illinois, Chicago, USA 58. Indiana University of Pennsylvania, Indiana, PA, USA 59. University of Maryland, College Park, MD, USA 60. Swanson Analysis Inc. Houston, PA, USA 61. University of Surrey, Guildford, UK 62. Huddersfield Polytechnic, Huddersfield, UK 63. City University of London, UK 64. Technical University, Darmstadt, Germany 65. Technical University, Hamburg, Germany 66. Technical University, Kaiserslautern, Germany 67. Siddhartha Engineering College, Vijayawada 68. Regional Engineering College, Tiruchinapally 69. Westinghouse Electric Corporation, Orlando, USA 70. Technical University, Dresden, Germany 71. Institute of Fluid Flow Machinery, Gdansk, Poland 72. Anna University, Madras 73. Karnataka Regional Engineering College, Surathkal 74. Malnad College of Engineering, Hassan 75. General Electric Aircraft Engines Div., Cincinnati, USA 76. Delhi College of Engineering, Delhi 77. Lal Bahadur Sastri National Academy, Mussorie 78. Technical University, Aachen, Germany 79. McGill University, Montreal, Canada 80. Indian Air Force, Sena Bhavan, New Delhi 81. Hindustan Aeronautics Ltd., Koraput Division, Sunabeda 82. Purdue University, USA 83. Central Scientific Instruments Organization, Chandigarh 84. Bhabha Atomic Research Center, Bombay 85. Jadavpur University, Calcutta 86. Bengal Engineering College, Howrah 87. Orissa Agricultural University of Technology, Bhubaneshwar 88. BHEL Electronics Division, Bangalore 89. University of South Central Florida, Orlando 90. Nanyang Technological University, Singapore 91. Murray Turbo machinery Division, Burlington, Iowa 92. National Tsing Hua University, Hsinchu, Taiwan 93. National Cheng Kung University, Tainan, Taiwan 94. Sun Yat Sen Institute of Science and Technology, Lungtang, Taiwan 95. Nuclear Power Station, Hengchung, Taiwan

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96. Power Research Institute, Taipei, Taiwan 97. Industrial and Technological Research Institute, Hsinchu, Taiwan 98. Yuan-Ze Institute of Technology, Nei-Li, Taiwan 99. Chung Yuan Christian University, Chung Li, Taiwan 100. Rolls Royce Ltd., Parsons Division, Newcastle 101. Imperial College of Science, Technology and Medicine, London 102. University of Queensland, Brisbane 103. Pequeven, Maracaibo, Venezuela 104. INTEVEP, Caracas, Venezuela 105. Kakarpara Nuclear Power Plant, Kakarpara 106. NKBR Institute of Science and Technology, Vidyanagar 107. Korea Institute of Science and Technology, Seoul, Korea 108. Korea Advanced Institute of Science and Technology, Taejon, Korea 109. Asea Brown Boveri, Eblang, Poland 110. Institute of Fluid Flow Machinery, Gdansk, Poland 111. Korea Institute of Machinery and Materials, Taejon 112. Samsung Aerospace, Changwon, Korea 113. Vizag Steel Plant, Visakhapatnam 114. Gandhi Institute of Technology and Management, Visakhapatnam 115. GMR Institute of Technology, Rajam 116. John Welch Technology Center, Bangalore 117. Visvesvaraya Technological University, Belgaum 118. National Thermal Power Corporation, New Delhi 119. Sri Venkateswara University, Tirupati 120. Manchester University, UK 121. Samtech, Liege, 122. Wright Patterson Air Force Base, Dayton 123. Rolls Royce, Indianapolis 124. GE Aircraft Engines, Cincinnati 125. Pratt and Whitney, Hartford 126. Boeing, Seattle 127. Gitam University, Visakhapatnam 128. Indian Institute of Technology, Delhi 129. Group of Vijayawada Schools of about 3500 students on Koneru Lakshmaiah University in shaping Future Advanced Engineers to Build the Nation, Vijayawada 130. Our Scientists and Their Contributions and Our National Projects today, Hymamshu Jyothi Kala Peetha, P.U. College Malleswaram, Bangalore 131. Evolution of Science, Address to the National Science Day 2014, Naval Science and Technological Laboratory, Vigyan Nagar, Visakhapatnam, 28 Feb 2014 132. Major strides made in developing satellite launch vehicles, critical to Indian Space Mission, Annual Technology Day - “Edison Meets Faraday Again”, Crompton Greaves, Mumbai, 20 May 2014 133. Park College, Coimbatore, 15 December 2014. 134. Pangaea and Gravitational Waves, Geological Society of India, Bangalore, June 29, 2016

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13. FIVE DECADES OF RESEARCH WORK

1. Turbomachinery Blade Vibration –

1.1 Free Vibrations: My early research began with the determination of first bending natural frequency of tapered cantilever blades by using fundamental energy principles. This work expanded to the coupled bending and torsion free vibration characteristics of turbo machine blades with taper, pretwist and asymmetry mounted on rotating blades at a stagger angle. These calculations have been extended to packeted-blades and bladed disks etc., to determine the influence of coupling between the blades and the neighboring elements. Various methods have been used, e.g., Variational principles such as Galerkin, Ritz and Lagrangian procedures, Collocation, Holzer, Myklestad, Polynomial Frequency Procedures, and Finite Element Methods. The structure is considered as a beam or pre twisted plate (shell), laminated composite plate or as a submerged structure in a hydraulic turbine. Higher order effects such as shear deformation, rotary inertia, fiber bending, additional effect of torsion due to pre twist, support flexibility were also considered. This work is then extended to laminated plates. A significant part of this work has been to include the influence of Coriolis forces and their effect on the dynamic behavior of rotating blades. Determining the natural frequencies and mode shapes and detuning them from possible resonances is considered to be sufficient in the design of low speed and low capacity machines. This work was initiated in IIT Kharagpur and later under the influence of Professor William Carnegie of University of Surrey. While these early developments helped in a clear understanding of free vibrations that help in detuning the blades from resonance, it soon became clear that excitation and damping are important factors that have to be addressed in an analysis for fatigue failures that have occurred in the development of aircraft engines by Frank Whittle and the maiden voyage failures of steam turbine blade failures of QE II passenger liner in late 1960‟s.

1.2 Stage Aerodynamics: For the first time the coupling of fluid structure interaction in determining the forced vibration response was recognized and towards this end unsteady 2 dimensional thin airfoil theories were developed to determine the non-steady lift and moment acting on isolated air foils due to transverse gusts. These theories were then extended to stream wise gusts for flat plate and cambered airfoil blades with an angle of attack. Interaction between a stator and rotor row of cascades of a turbo machine stage was then considered and the expressions for transverse and stream wise gusts induced as a result of potential flow and vortex wake cutting were developed. Using these, general purpose computer codes were developed to determine the non-steady forces of a given stage. The theories are then extended to compressible subsonic flow and today the most efficient computer codes for gas turbine stages are in operation in an interactive mode on work machines. This approach was developed in Wehle Research Laboratory of Rochester Institute of Technology with preliminary discussions from Professor Sears of Ithaca after his retirement and settlement in Arizona for US Naval Laboratory requirements as a part of lifing of turbomachine blades.

1.3 Hydraulic Analogies: To study the flow visualization and determine the non-steady forces of a turbo machine stage, hydraulic analogy was considered as a possible tool. As there was a major limitation with the classical analogy for the specific heat ratio, exact modified analogies were first derived and shown to be accurate through several analytical studies of axisymmetric nozzle flows. The limitations on classical and modified analogies due to the presence of a straight or oblique shock have also been studied and verified by experiments. The modified analogy is now well established. This test was developed in Stress

18 Dr. J.S. Rao

Technology Inc., Rochester for US Naval Laboratories for flow visualization, determining the ratio of unsteady forces to steady forces leading to life estimation. Using this analogy, rotating water tables are designed to simulate turbine stages and determine non steady forces and make flow visualization studies. Flat plates and cambered plates were initially tested and then the stage of an Orpheus engine has been successfully modeled. Subsequently GTX engine (aircraft engine under development at Gas Turbine Research Establishment, Bangalore) turbine and compressor stages were modeled to determine the non- steady forces. For the compressor stage, the flow visualization studies have shown the conditions under which rotating stall could occur. The development of modified hydraulic analogy was used to model the GTX engine combustion chamber and study the flow visualization and pressure ratios obtained in the chamber. Studies on this have been successfully completed.

1.4 Damping Tests: The application of the non-steady force and moment data on the turbine blade leads to the assessment of forced vibration response. In this calculation the most important parameter is the damping. Tests have been conducted through several rigs for this purpose. Equivalent viscous damping measurements made on rigs where the centrifugal load is simulated by thermal cooling or in actual spin rigs are used to determine the response of turbo machine balding. At some resonances the errors have been found to be of the order of 400 %. These models were therefore discarded and search began to quantify the nonlinear damping more thoroughly. Today damping models dependent on rotational speed, mode and strain amplitudes are developed and application of such models has shown that the resonant stresses can be determined with an accuracy of 30 %. This has been a significant breakthrough in the blade vibration work. Methods for determining the gas damping values due to unsteady aerodynamics in the stage were also developed and for a typical case the self-excited vibration has been studied. A significant advance is now made to determine the material and friction damping through finite element models that avoid costly experimentation.

1.4 Resonant Stresses: Initially modal analysis theories were developed to determine the resonant stresses at the critical speeds under steady operation, when any one of the blade coupled modes coincide with a given harmonic of the nozzle passing excitation. These were then extended to the case when the rotor is either accelerated or decelerated so that the transient resonant stresses can be determined taking into account the nonlinear damping. These stress values are then used in developing computer codes for the life estimation of a blade using cumulative damage and fracture mechanics theories. Some case studies were shown when the blades can fail for certain acceleration values or over a certain number load blocks arising out of the engine stopping and starting.

1.5 Heat Transfer: The heat transfer and temperature distribution is also important in determining the structural response as the material data is dependent on the temperature. With the advent of very high temperature applications of the order of 2000 deg. K and above radiation effects become pronounced. For this purpose comprehensive finite element programs were developed taking into account the high nonlinearities due to the radiation effect. Combined vibratory and thermal loads and the resulting response programs were developed for this purpose.

1.6 Governing Equations of Turbine Blades: Another important factor is the maneuvering loads on blades due to engine precession in diving and turning operations of aircraft particularly for military applications. Equations of motion for turbine blading under such conditions have been derived and solutions of these

19 Dr. J.S. Rao

are in progress. Similarly, equations of motion of long flexible blades as in helicopter rotors have also been derived and solutions obtained taking into account the nonlinearities due to Coriolis forces.

1.7 Fracture Mechanics: The technologies developed for life estimation have been successfully applied in the failure investigation of Narora plant accident of 31st March 1993. Using the blade centrifugal loads, steam bending loads and unsteady forces, the steady and dynamic stresses are determined. The conditions at which a crack can initiate at the root are established. With the initiated crack, crack propagation studies were made and a close match of the striation spacing of the observed fracture is obtained. Conditions of multiple cracks that occurred in this blade failure are also studied.

1.8 Strain Based Methods: Local stress-strain approach has been successfully employed to predict cracking behavior of Giribata hydraulic runner blades. The elasto-plastic analysis of last stage steam turbine blades has been obtained using NISA finite element code to determine the plastic range near the stress raiser points of the blade root. In critical areas of the blade root, it was shown that the material just yields and the maximum stresses are well within the ultimate yield strength, which otherwise are far beyond the ultimate strength of the material as predicted by linear analysis. The extent of plastic zone is also shown to be such that linear elastic fracture mechanics principles can be applied.

1.9 Analytical Determination of Damping: A major problems in blade analysis has been the estimation of damping before arriving at an accurate stress value for life estimation. A major breakthrough has been achieved by developing an analytical procedure using commercially available codes such as ANSYS. Lazan‟s damping law is used for each element in the bladed-disk and the energy loss is determined from the coefficient J and exponent n for the material. Using the potential energy in each given mode, the loss coefficient is then determined. The equivalent viscous damping factor can then be determined as a function of reference strain value for each mode as a function of strain amplitude and speed of rotation. In the presence of interfacial friction surfaces, free vibration decay curves are determined from impulse response with the material damping. This method has eased life estimation of complex rotating machinery. This procedure has been obtained to determine the life of last stage blades in reverse flow conditions in collaboration with experimental flow data from Leeds University.

1.10 Single Crystal Blades: Recently in collaboration with Ukraine and Poland, the free vibration characteristics of single crystal blades are determined using 3D finite elements.

1.11 In 2009 US Air flight was hit by Canadian Geese causing the aircraft to land in Manhattan River. Wright Patterson Air force Base gave a project through European Office of Aeronautical Research Board to India and Poland. For different blocking conditions the unsteady shock forces were estimated in the first stage and the life was determined which was only 7 seconds.

2. Torsional Dynamics of Drive Trains –

2.1 Locomotive Crankshaft Failures: Initially the work on torsional dynamics began with the investigations on failure of crankshafts in ZDM2 narrow gauge diesel locomotives. The excitation forces were identified by tests on the engine in Nagpur to obtain PV diagrams and then numerically determining the excitation torques in each of the engine orders. With the availability of computers at that time Holzer 20 Dr. J.S. Rao

table calculations were done to determine the free vibration characteristics of the engine with Suri-Mach transmission system and the cause of resonance in the engine running speeds was shown. These engines used without Suri-Mach transmission did not have similar problem elsewhere in the world.

2.2 Diesel Engine Drives: The expertise developed in torsional dynamics was then extended to model diesel engine driven generator sets to determine the natural frequencies, mode shapes, resonant stresses at the critical speeds, cyclic irregularity for the frequency quality and safety calculations according to Lloyd's of England. This work was then extended to model diesel electric locomotives developed in India at Chittaranjan. The nonlinear properties of the couplings used which are functions of the torque and temperature were considered by an iterative solution to determine the critical speeds, resonant stresses and the performance of the couplings. These programs were then checked against tests conducted in Chittaranjan. The performance of nonlinear couplings developed by Twyflex couplings limited in England was studied by Ritz averaging techniques to understand the behavior of such couplings in marine and other installations. The subject was then applied to reciprocating machine applications to understand the dynamic behavior of reciprocating engine compressor sets or electrical motor reciprocating compressor sets to find out the critical speeds and resonant stresses and also the coefficient of speed fluctuations. These programs are subsequently developed in transfer matrix form. One of the main problems in turbo alternator sets is the design of coupling to properly isolate the turbine from generator and effectively transmit sudden shock loads arising out of line short circuit. Programs to develop the transient torsional stresses in a turbo alternator set were developed using continuous transfer matrix elements. Using the programs thus developed, the failures of gear boxes in a gas turbine power plant in Europe and in Kancheepuram have been successfully investigated and life estimation procedures established. The gear life estimation programs are computerized. Finite element solutions of industrial rotors in torsional vibration through ANSYS are established taking into account various electrical disturbances from the grids including short circuit conditions at the generator terminals. Practically any torsional dynamics problem in industry can be solved with the help of programs developed above and vast experience has been gained in this field.

2.3 Complete Power Train and Drive Train Simulation of SUVs and Hybrid Cars: With the advent of CAE, simulation of engineering design processes is gaining rapid progresses in order to reduce design cycle time and prototype building and testing practices. An automobile drive train from engine to wheels through a torque converter, isolator, transmission, transfer case, differentials, propeller and axle shafts, is a typical example whose design and acceptance of prototype is an expensive and time consuming process. It was demonstrated how this design process can be speeded up through simulation of drive train dynamics that can match with test results; thus reducing design cycle time and gain better understanding by parameter variation during the design stages.

3. Bending Dynamics (Rotor Dynamics) –

3.1 Crankshaft Bending Dynamics: While investigating the failures of crankshafts in ZDM2 diesel locos, computer programs were developed using Myklestad method to determine the natural frequencies in 21 Dr. J.S. Rao

bending. The tabular methods were replaced by transfer matrix form in subsequent years and general purpose computer codes were developed to determine the critical speeds of rotors mounted on flexible supports.

3.2 Influence of Bearing Supports: The properties of hydrodynamic and hydrostatic bearings were determined by solving the appropriate Reynolds equation. The effect of tilt was considered in doing so for plain cylindrical hydrodynamic bearings. Eight coefficient bearing models were developed for application to rotor dynamics. Programs were developed by transfer matrix method in initial days to determine the unbalance response of industrial rotors such as turbine, compressor and alternator rotors mounted on eight coefficient hydrodynamic bearings. Methods to predict instability threshold speed due to oil whirl are developed using linear theory. Experimental tests were conducted to verify these speeds and demonstrate the oil whirl and whip of the rotors mounted on hydrodynamic bearings. The asymmetry of rotors such as generator rotors was taken into account in the unbalance response programs. Subsequently these programs were generalized to account for the bearing properties and distributed mass. The programs were generalized to the extent that the rotor geometry is fed as data into the program and all the modeling was done internally. For determining the unstable operation speeds a general transient whirl program was developed based on a time dependent transfer matrix method which itself was separately derived. This program can take into account the bearing nonlinearities to determine the transient whirl of the rotor along its span and thus determine whether a rotor speed is safe or not beyond the linear instability threshold speed. This program enables the designer to push the rotor speeds well beyond the linear instability predictions.

The new generation gas turbines use a multi spool configuration with an intershaft bearing. Transfer matrix methods for such multi spool rotors were derived to determine the unbalance response and computer codes were developed in a very general form. Several industrial rotors were balanced in the field and the laboratory using influence coefficient method. Multi plane flexible rotor balance methods were developed using influence coefficient method. For the Narora unit incident in March 31, 1993, extensive calculations have been made to determine the critical speeds, blade loss response and bearing loss response of the Turbine and Generator units. From these calculations, the rotor coast down chart available during the incident could be corroborated, particularly explaining its hover at a new critical speed. These calculations also enabled the determination of rub loads of the LP V stage and the fracture mechanics of the blade in a short span of 30 seconds.

3.3 Nonlinear Bearing and Seal Properties: Cryogenic pumps employed in Geo stationary launch vehicles handling liquid oxygen and hydrogen are highly complex rotating machinery running at very high speeds around 43,000 rpm. The influence of rolling element bearings, seals and couplings play a significant role on the system dynamic behavior. The rotor and its mounted parts cannot be assumed to be beam models and the casing is also flexible and interacts with the rotor. A complex CAD model of this system is developed and finite element model generated for a complete dynamic analysis of solid rotors. The Cryogenic design thus developed operated successfully in the launch of GSLV on 5th of February 2014.

22 Dr. J.S. Rao

Estimation of Seal stiffness and damping coefficients is a complex subject. The methods of using commercial CFD codes for determining the seal performance and the stiffness and damping coefficients is established using Fluent platform. The radial and tangential loads are estimated first from the pressure distribution of a seal under given spin and whirl conditions with an eccentricity. These loads are shown to be related to the stiffness and damping coefficients and procedures of arriving at them are established. The results for zero eccentricity available from Hirs theory are shown to be in good agreement.

3.4 Gear Flexibility: In high speed turbo-alternator systems, with gear transmission units, the gear box flexibility plays an important role in the coupling of torsional and bending dynamics. A general purpose computer program to determine the coupled natural frequencies has been established using finite element methods, as a part of project in Taiwan. The significance of dynamic coupling terms and application of squeeze film dampers to control bending-torsion vibrations has been extensively studied. It is shown that geared rotors with squeeze film dampers show chaotic behavior and the route to such chaos is established.

3.5 Expert Systems for On-Line Diagnostics: With the above technology and vast experience several diagnostics studies were carried out on diesel generator sets, turbine generator sets etc., with the measurements in the field and real time analysis to understand the problem and remedy the same. A general purpose expert system to diagnose the fault of a rotor is developed. On-line expert system was developed to continuously monitor the condition of a rotating machine installation and give diagnostics for an impending problem. This is the first of its kind in the world and is satisfactorily working in Kakrapara nuclear power plant and extended to other nuclear turbines in India. A similar system is installed in Ropar thermal power plant. The continuous condition monitoring and expert diagnostics is extended to operate remotely through the web to enable remote maintenance of a system. The LP rotor in Raichur thermal power plant is diagnosed to be bent and also subjected to unstable vibrations. It was also found by analysis that the pedestal support for the bearing is eccentrically mounted and also the platform is cantilevered giving rise to axial vibrations of the pedestal as a result of the vertical unbalance vibrations. The instability is attributed to looseness in assembly.

3.6 Influence of Foundation: The influence of foundation on rotor dynamics is first established through sub structuring method. Now methods of combining stationary and rotating systems through „USERACEL‟ applications in ANSYS are established that simplify the problem. Twin spool solid rotor problem solution methods are also established. The performance of aircraft engines under a given unbalance is studied taking into account the casing and test bed conditions. The results obtained are shown in some specific applications where test bed has influence the response to be in agreement with tests.

3.7 Solid Rotor Dynamics: The rotor dynamics during the 20th century is limited to beam models developed initially by Jeffcott in 1919. Solid rotor dynamics is first established early 21st century through the ANSYS solver to handle twin spool rotors and casing/foundation with several support bearings and seals to obtain Eigen values, stability, unbalance response. Nonlinearities from bearings and the resultant effects on rotor dynamics included. Solid rotor dynamics was also successfully applied to Synchronous generators of Crompton Greaves, Bombay. The influence of high acceleration rates are also taken into account on the shift of critical speeds and reduction of peak amplitudes of whirl. Several works have been contributed to OEMs in US, Canada, England, Germany, India, Hungary and Italy.

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4. Railway Train Consist Dynamics

4.1 Draw Bar Failures: Studies on train consist dynamics began with the failures of draw bars observed in the north eastern hilly region of India. The problem was formulated as a multi body system with simple longitudinal motion and inputs at the engine. Modal analysis was used. Transient response calculations were made by special programs developed for this purpose, arising out of train handling conditions while encountering a steep slope upwards or downwards or suddenly responding to changes in signals on a hilly terrain. Tests in the field were conducted to determine the type of forces felt by the first draw bar between the engine and train and the analytical response obtained was checked against the field results. In an actual case of deliberate draw bar failure induced in the field, the computer program predicted very accurately the location of the failure. These studies have been extended to lay down the train handling conditions of long train consist systems to haul heavy goods over long distances. The draw bars are considered to be nonlinear with a slack time and the number of degrees of freedom has been increased to three. The computer code uses time marching numerical techniques as against the linear model considered before.

4.2 Brake Squeal Instabilities: In underground metropolitan transport systems, high speeds of travel are achieved by using disk brakes. However these brakes are prone to instabilities. The system adopted in Washington underground trains ran into troubles in early 80's. To understand this problem a mathematical model of the disk, friction pads and the caliper carrying braking pressure system attached to the truck, is developed. Equations of motion were derived for each system and various modes of the disk obtained by ANSYS program are each structurally coupled to the pads and caliper to obtain the system models. Using the kinematic constraint at the point of application of braking force between the caliper, pads and the disk, stability criteria were derived. The model predicted exactly all the instability modes detected in field tests using real time analyzers. For the purpose of tests special instrumentation was devised for obtaining the temperature of the pads and disk and the vibratory signatures of different elements in the brake system. The noise signatures were also analyzed in a similar manner. Five other available systems are validated by the computer codes and two of them were chosen, one which would squeal and the other not to squeal as predicted by the computer code for field tests. The field tests have confirmed the computer code predictions.

5. Aircraft Engine Design –

5.1 LP Compressor of Kaveri Engine for Indian Light Combat Fighter Tejas: It has been a great opportunity to design the LP compressor of Kaveri engine from the base line provided by Gas Turbine Research Establishment (GTRE), Bangalore, India. The work was carried out by a team of nearly 40 engineers with continuous interaction from GTRE engineers.

5.2 Flow Analysis: CFD analysis is first performed on the primary and secondary flow paths first on the base line to determine the heat transfer coefficients and bulk temperatures under transient as well as steady state conditions. The compressor performance is studied to check whether the desired pressure ratio has been achieved. An unsteady flow path interference study is made for each stage to determine nozzle loads. These CFD analyses are first carried out so that the base line is not disturbed. 24 Dr. J.S. Rao

Then a transient heat transfer analysis is done for the entire integrated structure to determine the thermal stresses and expansions in all the directions. The radial expansion helps in identifying possible rub instances.

5.3 Rotor Dynamics: A complete system rotor dynamics analysis is conducted which then identifies whirl amplitudes at critical speeds and thus the rub conditions can be established while accounting for thermal expansions simultaneously. Any alterations to the base line can be incorporated at this stage before proceeding to individual component design. Each individual component is then designed for structural integrity and life assessment is made. Two D axi-symmetric analysis is made for the entire rotor system of the compressor with blade loads, centrifugal loads, thermal loads … to determine peak stresses and their locations. Individual bladed disks are then modeled using axi-symmetry with stress stiffening and spin softening effects accounted for. The peak stresses usually occur at the dovetail locations. In some cases they are above yield.

5.4 Optimization for Minimum Weight: Strain energy density plots are obtained to identify locations where material can be removed and where it is necessary to strengthen. DOE techniques are developed to perform optimization for minimum weight.

5.5 Bearing Stiffness Evaluation: The bearing stiffness estimation techniques are developed by considering the rigid body displacements as well as structural deformations. The loads are applied in the form of cosine distribution and the displacements are Fourier transformed to be able to determine the stiffness in an accurate manner. The support structure is then optimized by using DOE techniques. Weight optimization is similarly carried out for the casing and stator blades and other stationary members.

5.6 Vibration Analysis: All stages are vibration analyzed and damping is determined by using hysteresis and Coulomb damping models developed for this purpose.

5.7 Life Estimation: The life of each blade and disk is then assessed by strain based cumulative damage calculation. For high pressure cooled blades transient heat transfer and thermal analysis is established to be able to predict strain based life by using Neuberization technique. Life estimation procedures are all streamlined and automated to minimize design cycle time. These methods include stress-based, strain based and fracture mechanics methods.

5.8 Anti-Icing Design: Anti-icing for the front frame is accounted by providing a hot flow path to prevent any solid object injection into the system.

5.9 Bolted Joint Design: All the bolted joints between the rotor disks and vane drums are analyzed by using nonlinear contact elements and elasto-plastic analysis to provide optimum closure with minimum weight. The stresses are also contained within yield.

25 Dr. J.S. Rao

5.10 Blade-Off Condition: Blade-off condition is simulated for ascertaining the structural integrity of the casing. Also, critical off-design operating conditions are accounted in ascertaining the structural integrity.

5.11 Mistuning Design of Bladed-Disks: Intentional mistuning design procedures are developed using Mode distortion as a primary mechanism to study the forced response of bladed-disks and mitigate resonance.

6. Optimization – Optimization from commercial codes is fast becoming a reality to decrease the design or modification cycle time for stationary and rotating structures. Industrial optimization essentially involves using shapes as variables and solvers to obtain the objective functions. Solid Isotropic Material with Penalization (SIMP) evolved Topology optimization that is successfully employed.

6.1 Design and Optimization: It is first shown that the optimization that evolved with Brachistochrone problem from Isaac Newton and Design approach given by Boris Galerkin give same results and thus Optimization itself can be used to obtain a design solution directly. This principle is applied to arrive at a 70 seater aircraft wing structure without first getting a baseline from classical approach.

6.2 Weight Optimization: Using topology optimization the weight of the wing-box central rib of a proposed Saras aircraft can be decreased by as much as 46% by considering the severe loading conditions. In doing this, the maximum deflections are retained of the same order and the peak stress pushed to less than half of yield value, while the average stress is retained at the same value of the base line. OptiStruct is used for this purpose. This technique is used to reduce the weight of a bladed-disk of a fighter aircraft engine by providing holes and removing material in the shank by removing the material where there is no strain energy density; or by keeping the maximum stress below the allowable design stress at the stress raiser location. The weight reduction is a little more than 10%.

6.3 2D Shape Optimization: In an attempt to make the bladed-disks more efficient structures, the designs are taken into globally elastic but locally plastic structures around the vicinity of stress raiser locations, thus making the average stress to be high. Determination of true stress in these local plastic regions is first obtained by using Neuberization principles. The local strain here is reduced by modifying the shapes; initially this is achieved for 2D shapes (blades without curved entry) by using topology optimization. The design vectors are chosen from the morphed shapes within the constraints and the objective function of local stress or strain evaluation is obtained by a solver such as Ansys used on a platform where the preprocessing and post processing are done for the results of the solver. More than 25% of reduction in local strain could be achieved that boosted the life by as much as four times of the baseline in operation.

6.4 Topology Optimization Design for New Wings and Flutter: NAL and ADA were engaged in design of 70 seater aircraft and the wing was required in a short time instead of the traditional testing and approximation route. New technology was developed to get the concept design and using dimensional optimization technique this wing was produced in about four weeks. A flutter analysis of this wing was also successfully analyzed and published.

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6.5 Optimization with multiphysics objective functions: There are several applications that involve industrial applications with multiphysics objective functions with shape functions as design variables. A typical example is that of a Dorsal Unit having transmitters and receivers that produce heat at the same time operating efficiently at lower temperatures. The required temperatures as objective functions are obtained by a conjugate heat transfer of the flow that is made to carry away the heat while transferring some through the surrounding metallic structure. A successful design of the shape of the dorsal unit is obtained by topology optimization of its shape with conjugate heat transfer maintaining the maximum temperature to be within allowable limits. Another typical case is that of minimizing flow induced noise. The eddies in the turbulent flow are modeled as sources for noise propagation by either Lighthill‟s analogy or Ffowcs Williams-Hawkings wave equation; This approach adopting RANS approach with Large Eddy Simulation (LES) or Direct Navier-Stokes Solution (DNS) is adopted to capture the sources and evaluating the objective function for optimization of the shapes to give minimum noise; this has been achieved for various cases such as  Sunroof buffeting noise in an automobile  Noise levels during a launching of a space vehicle to protect the instrument bay  Minimum noise to the pilot in a fighter aircraft cockpit

6.6 Magneto hydrodynamics flows: In the recent years design of Fusion Reactors involving electromagnetic fields as large as 107 times that of the earth‟s magnetic field are in progress; they require Tritium (an isotope of hydrogen) breeders for the reaction chain of fusion of Deuterium and Tritium that produce an alpha particle and a neutrino (besides energy) from which the neutrino is utilized with Liquid Lithium Titanate (a magnetic fluid) to produce Tritium. This Breeder that faces plasma at 100 million degrees Celsius through radiation from the vacuum vessel is also required to be cooled by Helium. To achieve optimum design of these flows, shape optimization is used in the first such design of a Liquid Lithium Ceramic Breeder successful.

6.7 Metamodel Based Design Optimization: One of the major problems in industrial optimization today is the computer solver time in evaluation the objective function or functions; this maybe as much as a month in the case of vehicle crash analysis with high speed computers. These problems being highly nonlinear, the optimization is achieved by developing a Response Surface in a Hyper Plane of the design variables (shape functions) using a Design of Experiments Approach (DOE) and a Metamodel (or a Surrogate) to seek the optimum value on the Response Surface without resorting to the time consuming Solver. This approach is successfully used in  Three Dimensional Curved Entry Roots of Last Stage Low Pressure Stage Steam Turbine blades or Low Pressure Compressor Blades (or Fan Blades) of Aircraft Engines to decrease local strains and thus increase life  Three Dimensional Shape optimization of Energy absorbing structural members of vehicles for passenger safety from crash

6.8 Composite Optimization: In modern designs where weight reduction is practiced to obtain efficient light eight structures, composites are being increasingly utilized. Such composite designs are derived from topology optimization.  A successful design of a composite aircraft wing from an optimized metallic wing is obtained; this allows considerable reduction of light weight aircraft with the required strength 27 Dr. J.S. Rao

 The long fan blades or first stage compressor rotor blades are susceptible for failure from foreign object ingestions such as Canadian Geese bird flock that hit US Air flight in 2009. A long blade loss decreases considerably the life for complete failure to few seconds and the resulting engine loss can be catastrophic for human loss. Conversion of metallic blades to composite blades decreases the impact loads on engine casing and reduction of unbalance loads on the engine rotor dynamics. A successful design for replacing a metallic blade by a composite is achieved by topology optimization

6.9 Temple Cart Weight Optimization: Temple Carts of ancient Rig-Vedic Designs made of wood are very heavy, as much as 300 tons in weight. These very slow moving carts sometimes lead to serious accidents when devotees pull them on festival days. Topology optimization is used in redesigning them for considerable weight reduction while keeping the Vedic design principles intact.

7. Rotor Blade CFD for Marine Propulsion and Helicopters –

Hydrodynamics, open water characteristics of propellers, propellers with a cowl and the hull interaction have all become accessible for CFD analysis using commercial codes to assess the thrust and torque characteristics of advanced frigates and submarines. Cavitation is another phenomenon which affects significantly the ship characteristics and can induce severe vibration and under water noise, both of which become important in submarine navigation to avoid detection by enemy vessels. These methods are well established now. Using Fluent platform these techniques are developed for assessment of ship and submarine characteristics; several results obtained are verified against available experimental results including cavitation. CFD was successfully used in modeling helicopter rotor blades and determining the lift in designing light weight helicopters.

8. Combustion, Flow, Instabilities in Heat Exchangers and Furnaces –

Complete Flow, Combustion, Thermo-mechanical analysis and flow induced vibrations of heat exchangers was developed. Velocity field, pressure field, temperature field and flame analysis was achieved in the heat generating sections. The acoustic field is also obtained. A complete vibration analysis of the system and the mode shapes are determined. Combustion instability and Vortex-Induced Acoustic Vibrations are studied. In some furnaces, using simulation of flow and combustion, deflectors were designed to divert the hot gases prevent failures of furnace walls.

9. General Purpose Lifing Code –

Whenever a large software application involving major multi physics applications, they are conveniently divided into several modules and integrated on a common platform. Using this approach, TurboManager is developed to determine the life of turbomachine blades. Various modules developed are: 1. Hysteresis Damping Module [HDM]: Here a stand-alone code for determining Equivalent Viscous Damping of any structure, rotating or stationary, in any given mode of vibration for a given rotating speed as a function of Strain Amplitude at a given reference point is determined. This will be one input in lifing of any structure.

28 Dr. J.S. Rao

2. Coulomb Damping Module [CDM]: In this module a code is developed for determining Equivalent Viscous Damping of any structure, rotating or stationary, in any given mode of vibration for a given rotating speed as a function of Strain Amplitude at a given reference point under Coulomb friction at slipping interfaces. This will be another input in lifing of any structure that can be developed using a platform approach. 3. Fretting Damping Module [FDM]: Under extreme axial tension, the slipping surfaces are at asperity level with Hertzian contacts playing a role in micro slip conditions. Special methods are developed to determine this nonlinear damping as a function of strain amplitude as determined in Coulomb damping case. This damping model is obtained for the first time that helps in estimating cumulative damage. 4. Critical Speed Map [CSM]: The natural frequencies and mode shapes are first determined by taking into account stress stiffening and spin softening for a rotating structure. Campbell diagram is obtained and critical speeds in the operating region are identified. 5. Alternating Pressure Module [APM]: Using the geometry of flow path and appropriate CFD code, the alternating pressures are determined at all the node points of the structure under consideration whose critical speeds are determined. FFT analysis is made of these pressures to determine the required frequency components including the phase angles of the pressures at each node point. 6. Damping Envelope Module [DEM]: Different damping mechanisms are compared in the entire strain range and the maximum of these are retained to obtain the overall damping envelope for the given mode. 7. Steady Stress Module [SSM]: The steady stress field is obtained by treating the alternation pressures at zero frequency – this is obtained by a forced vibration analysis with very low frequency (0.001 rad/s) of the structure. 8. Resonant Stress Module [RSM]: This code is developed on a platform to determine the alternating stress at a given critical speed. The steady stress field from SSM is used in an iteration process to match with overall damping envelope obtained by calling DEM as a function of strain amplitude; the SSM value is divided by twice the value of iterated equivalent viscous damping to obtain the resonant stress amplitude and stress response at the peak stress location. 9. Failure Surface Module [FSM]: If the peak alternating stress is above Endurance limit and below Yield value three dimensional Fatigue Failure Surface for the material of the structural component considering the Mean Stress and S-N diagram is generated. Fatigue reduction factor considering surface finish, size, stress concentration … is determined and the Failure Surface of the structural component is determined. 10. Gear Stress calculations are performed to determine the bending and contact stresses by ; these stresses are compared with AGMA values based on single tooth and Lewis formula with corrections for bending stress and Hertzian theory with correction factors for contact stress. Then using Fatigue Reduction factor, the life of transmission units in power plants and drive trains is determined using FSM. 11. Low Cycle Fatigue [LCF] Module: If the mean stress at a stress raiser location goes into plastic region, the surrounding elastic stress range determined by accounting for damping is converted to local stress range by using Neuber‟s hypothesis. Using this local stress, local strain is determined by solving a transcendental equation for Neuber‟s law. Taking the mean stress into account, the failure surface for strain based life calculation is determined. 12. Cumulative Damage Module [CDM]: The cumulative damage fraction for each crossing of a critical speed is determined using Palmgren and Miner linear theory or Marco-Starkey nonlinear theory with either HCF or LCF as the case may be.

29 Dr. J.S. Rao

13. Number of Start-ups for Life [NSF]: By accumulation of number of cycles for each critical speed crossing, the cumulative damage for one start-up and shut-down condition is calculated and thus the number of start-ups of the structures (or the engine) is calculated for safe operation without failure. If the starting and operating conditions for a given mission of operation as in a fighter aircraft, the damage fraction for each typical mission are calculated. 14. Fracture Mechanics Module [FMM]: Using Stress Intensity Factor (SIF) or Linear Elastic Fracture Mechanics (LEFM) approach, a stress raiser location (or a notch) is modeled using a semielliptical notch model to determine (1) Crack Initiation Threshold level of SIF, SIF for finite cycle crack initiation, (2) Crack Propagation Threshold SIF once a crack is initiated (3) Crack propagation according to Paris law and (4) Final crack length for ultimate rupture and therefore crack propagation life. 15. AUTOLIFE Another lifing code for automotive components is also developed specifically addressing the drive train components and structures under resonant stresses from engine harmonics or transient excitations when the vehicle negotiates speed breakers.

10. Gravitational Waves and Influence on Earth –

Albert Einstein‟s theory of Relativity is completely proved with the detection of Gravitational Waves on September 15 2015 and announced on February 11th of 2016; with this all predictions made by Einstein 98 years ago are proven.

Gravitational waves offer a better understanding on how Pangaea travelled northwards and broke up from southern region to the current location of continents. Gravitational waves carry energy and transfer it to bodies like earth while passing around them. This energy received can slowly add heat over years and rise temperature. Also the main sources of energy for movement of the continental tectonic plates can be explained by the gravitational waves.

Gravitational waves can also be the main source in causing earthquakes from the movement of tectonic plates one over each other particularly in the regions where discontinuities are present in the mountain ranges. Therefore Gravitational waves can provide a better understanding of Geology. This work was sent for publication to Elsevier Journal Engineering Geology.

A finite element model of earth is also prepared and the strain energy of the gravitational waves is converted to heat energy to determine the temperature raise per second is determined. This modeling technique will be presented in 4th International NAFEMS conference in Bangalore in August 2016.

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14. JOURNAL PAPERS (Co-authors indicated in brackets)

1. Vibration of Cantilever Beams in Torsion, Journal of Sci. and Engng. Res., v.8, pt.2, 1964, p.351 2. The Fundamental Flexural Frequency of A Cantilever Beam of Rectangular Cross-section with Uniform Taper, Aero Qly, v.16, 1965, p.139 3. A Tabular Procedure for The Determination of Uncoupled Bending Frequencies of A Cantilever Beam, Journal of Sci. and Engng. Res., v.10, pt.2, 1966, p.189 4. Analysis of Interface Stresses in Single Point Cutting Tools, Intl. J Prod Res., v.5, 1966, p.289 (R. Nagarajan) 5. Stress Analysis of Cutting Tools, Machine Building Industry, 1966, p.39 (I.B.K. Murty) 6. Determination of Stresses in Single Point Cutting Tools, Intl. J Prod Res., v.6, 1967, p.65 (I.B.K. Murty) 7. Torsional Vibration of Cantilever Beams of Rectangular Cross-Section with Uniform Taper, Bull Mech. Engng. Educ., v.9, 1970, p.61 (B.M. Belgaumkar, W. Carnegie) 8. Flexural Vibration of Turbine Blades, Archiwum Budowy Maszyn, v.17, pt.3, 1970, p.375 9. Flexural Vibration of Rotating Cantilever Beams, J Aero Soc. (India), v.22, 1970, p.257 10. Nonlinear Vibrations of Rotating Cantilever Beams, J Roy Aero Soc., v.74, 1970, p.161 (W. Carnegie) 11. Nonlinear Vibrations in A Flexible Coupling, Shipping World and Shipbuilder, 1970, p.657 (W. Carnegie) 12. Experimental Investigation of Oil Whip of Flexible Rotors, Tribology, 1970, p.100 (R.J. Raju, K.B.V. Reddy) 13. The Effect of Depth Taper on Torsional Vibration of Tapered Cantilever Beams, J Sci. Engng. Res, v.14, 1970, p.55 14. Uncoupled Natural Frequencies of Tapered Beams, J Sci. Engng. Res, v.14, 1970, p.88 (B.M. Belgaumkar) 15. Solution of Equations of Motion of Coupled Bending-Bending-Torsion Vibrations of Turbine Blades by The Method of Ritz-Galerkin, Intl. J Mech. Sci., 1970, v.12, p.875 (W. Carnegie) 16. Flexural Vibration of Pre-Twisted Beams of Rectangular Cross-Section, J Aero Soc. (India), 1971, v.23, p.62 17. Determination of Frequencies of Lateral Vibration of Tapered Cantilever Beams by The Use of Ritz- Galerkin Process, Bull Mech. Engng. Educ., v.10, 1971, p.239 (W. Carnegie) 18. Vibration of Pre-Twisted Tapered Cantilever Beams in Torsion, Archiwum Budowy Maszyn, v.18, pt.3, 1971, p.443 19. Coupled Bending-Bending-Torsion Vibrations of Cantilever Beams, J Aero Soc. (India), v.24, 1972, p.265 20. Flexural Vibration of Pre-Twisted Tapered Cantilever Beams Treated by , J Engng. Indus, ASME, 1972, p.343 21. Torsional Vibration of Pre-Twisted Tapered Cantilever Beams, Inst. of Engrs. (India), CE Div., v.52, 1972, p.211 22. Nonlinear Vibration of Rotating Cantilever Blades Treated by The Ritz Averaging Process, J Roy Aero Soc., 1972, p.556 (W. Carnegie) 23. Torsional Vibration of Pre-Twisted and Tapered Cantilever Beams Treated by The Collocation Method, Ind. J Pure Appld. Physics, v.10, 1972, p.459 (W. Carnegie) 24. Natural Frequencies of Turbine Blading - A Survey, Shock Vib Dig, v.5, # 10, 1973, p.1 31 Dr. J.S. Rao

25. Numerical Procedure for The Determination of The Frequencies and Mode Shapes of Lateral Vibration of Blades Allowing for The Effects of Pretwist and Rotation, Intl. J Mech. Engng. Educ., v.1, 1973, p.37 (W. Carnegie) 26. Nonlinear Transverse Vibration of An Orthotropic Elastic Plate on Viscoelastic Foundation, Archiwum Budowy Maszyn, v.21, pt.1, 1974, p.15 (B. Kishor) 27. Nonlinear Vibration Analysis of A Plate on Viscoelastic Foundation, Aero Qly, v.25, 1974, p.37 (B. Kishor) 28. Free and Forced Vibration of Rods According to Bishop's Theory, J Acoust Soc. of America, 1974, p.1992 (D.K. Rao) 29. On The Use of Hu-Washizu's Principle in Deriving Equations of Motion of Rods and Beams, J Aero Soc. (India), v.26, 1974, p.87 (D.K. Rao) 30. Study of Vibration of Viscoelastic Timoshenko Beam on Viscoelastic Foundation, Bulgarian Academy of Sci. Theo. Appld. Mechanics, v.3, 1974, p.37 (D.K. Rao) 31. Computer Program for Aerodynamic Interference Between Moving Blade Rows, Wehle Research Lab TM 75 WRL M10, Rochester, NY, 1975 (N.F. Rieger) 32. Computer Program for Determining Unsteady Blade Forces of An Elementary Turbomachine Stage, Wehle Research Lab TM 75 WRL M11, Rochester, NY, 1975 33. Unsteady Blade Lift Forces - A Review, Wehle Research Lab TM 75 WRL M12, Rochester, NY, 1975 34. Coupled Bending-Bending-Torsion Vibration of Rotating Blades, ASME 76-GT-43 (S. Banerji) 35. Jump Phenomenon in Cam-Follower Systems, A Continuous Mass Model Approach, ASME 76- WA/D.E.-26 (E. Raghavacharyulu) 36. Blade Group Forced Vibration Computer Program, Wehle Research Lab TM 76 WRL M23, Rochester, NY, 1976 37. Effect of Streamwise Gust on Nonsteady Blade Forces of An Elementary Turbomachine Stage, Wehle Research Lab TM 76 WRL M24, Rochester, NY, 1976 38. Coupled Bending-Torsion Vibrations of Rotating Cantilever Blades Method of Polynomial Frequency Equation, Mechanism Machine Theory, v.12, 1977, p.271 (S. Banerji) 39. Vibration of Rotating Pre-Twisted and Tapered Blades, Mechanism Machine Theory, v.12, 1977, p.331 (M. Swaminadham) 40. Stiffness and Damping Coefficients of A Tilted Journal Bearing, Mechanism Machine Theory, v.12, 1977, p.339 (A. Mukherjee) 41. Lift and Moment Fluctuations of A Cambered Aerofoil Under Non-Convecting Streamwise Gust, Aero J Roy Aero Soc., v.81, 1977, p.83 (S. S. P. Rao, V. Mukhopadhyay) 42. Turbine Blading Excitation and Vibration, Shock Vib Digest, v.9, 1977, # 3, p.15 43. Unsteady Forces of Cambered Blades, Wehle Research Lab TM 77 WRL M4, Rochester, NY, 1977 (S. S. P. Rao, V. Mukhopadhyay) 44. Coupled Vibration of Turbine Blades, Shock Vib Bull # 47, pt.2, 1977, p.107 45. Vibration of Turbine Blades, Aero Res and Dev Board, India, ARDB-STR-5002, 1977 46. Torsional Vibration of Pre-Twisted Cantilever Plates, J Mechanical Des, ASME, v.100, 1978, p.528 (K. Gupta) 47. Unsteady Forces on Cambered Blades of Turbomachines, Wehle Research Lab TM 78 WRL M8, Rochester, NY, 1978 (S. S. P. Rao, V. Mukhopadhyay) 48. Flexural Vibration of Pre-Twisted Cantilever Plates, J Aero Soc. (India), v.30, 1978, p.131 (K. Gupta)

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49. Unsteady Aerodynamic Forces on Cambered Blades of An Elementary Axial Flow Turbomachine Stage, Journal of Aeronautical Society (India) v.30, 1978, p.147 (S. S. P. Rao, V. Mukhopadhyay) 50. Identification of Resonant Frequencies of Rotating Beams with The Use of PZT Crystals, Exptl. Mechanics, February 1979, p.76 (M. Swaminadham) 51. Steady State and Dynamic Behavior of Multirecess Hybrid Oil Journal Bearings, J Mechanical Engng. Sci., v.21, 1979, p.345 (M.K. Ghosh, B.C. Majumdar) 52. Turbomachine Blade Vibration, Shock Vib Digest, v.12, # 2, 1980, p.19 53. Dynamic Response of Bridge Girders of EOT Cranes Due to Dissimilar Joints, Mechanism Machine Theory, v.15, 1980, p.385 (V.V. Satyanarayana, D.P. Ghosh) 54. Hydraulic Analogy for Compressible Gas Flow in Converging Nozzles, Stress Technology Inc. 80- ID002-1, Rochester, NY, 1980 55. Simulation of Compressible Gas Flow in Converging-Diverging Nozzles by The Use of Hydraulic Analogy, Stress Technology Inc. 80-ID002-2, Rochester, NY, 1981 56. An Examination of Errors in Hydraulic Analogy for Nozzle Flows with Compressive Normal Shock, Stress Technology Inc. 80-ID002-3, Rochester, NY, 1981 57. The Effect of Straight Oblique Shock Waves on Hydraulic Analogy, Stress Technology Inc. 80- ID002-4, Rochester, NY, 1981 58. A Study of Nozzle Exit Flows by Hydraulic Analogy, Stress Technology Inc. 80-ID002-5, Rochester, NY, 1981 59. Application of Reissner Method to A Timoshenko Beam, J Appld. Mechanics, ASME, v.48, 1981, p.672 (K.B. Subrahmanyam, S.V. Kulkarni) 60. Effect of Damping on The Synchronous Whirl of A Rotor in Hydrodynamic Bearings, Trans. CSME, v.6, # 3, 1981, p.155 (R. Bhat, T.S. Sankar) 61. Coupled Bending Torsion Vibrations of Rotating Blades of Asymmetric Aerofoil Cross-Section Allowing for Shear Deflection and Rotary Inertia by Reissner Method, J Sound Vib, v.75, 1981, p.17 (K.B. Subrahmanyam, S.V. Kulkarni) 62. Coupled Bending Bending Vibrations of Pre-Twisted Cantilever Blading Allowing for Shear Deflection and Rotary Inertia by Reissner Method, Intl. J Mech. Sci., v.23, 1981, p.517 (K.B. Subrahmanyam, S.V. Kulkarni) 63. Optimum Design of Hydrodynamic Bearings for Minimum Unbalance Response of Rotors, J Mech. Des, ASME, v.104, 1982, p.339 (R. Bhat, T.S. Sankar) 64. Conditions of Backward Synchronous Whirl of A Flexible Rotor in Hydrodynamic Bearings, Mechanism Machine Theory, v.17, 1982, p.143 65. Analysis of Lateral Vibrations of Rotating Cantilever Blades Allowing for Shear Deflection and Rotary Inertia by Reissner and Potential Energy Methods, Mechanism Machine Theory, v.17, 1982, p.235 (K.B. Subrahmanyam, S.V. Kulkarni) 66. Coupled Bending-Bending Vibrations of Pre-Twisted Tapered Cantilever Beams Treated by Reissner Method, J Sound Vib, v.82, 1982, p.577 (K.B. Subrahmanyam) 67. Application of Reissner Method to Derive The Coupled Bending-Bending-Torsion Equations of Dynamic Motion of Rotating Pre-Twisted Cantilever Blading Allowing for Shear Deflection, Rotary Inertia, Warping and Thermal Effects, J Sound Vib, v.84, 1982, p.223 (K.B. Subrahmanyam, S.V. Kulkarni) 68. Incorporating The Effect of Skewing in The Calculation of Magnetic Noise of Induction Motors, J Inst. of Engrs. (India), v.63, EL3, 1982, p.123 (S.S. Murty)

33 Dr. J.S. Rao

69. Analytical and Experimental Investigation of Rotating Blade Response Due to NPF Excitation, Shock Vib Bull # 53, pt.4, 1983, p.85 (H.M. Jadvani) 70. Turbomachine Blade Vibration, Shock Vib Digest, v.15, # 5, 1983, p.3 71. Instability of Rotors in Fluid Film Bearings, J Vib Acoust Stress Rel Des, ASME, v.105, 1983, p.274 72. Hydraulic Analogy for Isentropic Flow Through A Nozzle, Def. Sci. Journal, v.33, 1983, p.97 (V.V.R. Rao, V. Seshadri) 73. Free and Forced Vibration of Turbine Blades, Vibration of Bladed Disk Assemblies, ASME, 1983, p.11 (H.M. Jadvani) 74. Rotating Water Table for the Determination of Nonsteady Forces in A Turbomachine Stage Through Modified Hydraulic Analogy, Def. Sci. Journal, v.33, 1983, p.273 (E. Raghavacharyulu, V.V.R. Rao, V. Seshadri) 75. Mathematical Modeling to Simulate The Transient Dynamic Longitudinal Force in Draw Bars of A Train Consist, J Sound Vib, v.94, 1984, p.365 (E. Raghavacharyulu) 76. Fluid Structure Interaction Problems in Turbine Blade Vibration, Recent Advances in Fluid-Structure Interaction, ASME, 1984, p.89 (D.K. Gupta, C.V. Ramakrishnan) 77. Enumeration of Kinematic Chains and Their Structural Components, J Engng. Des, v.2, # 2, 1984, p.40 (V.P. Agrawal) 78. Instability of Rotors Mounted in Fluid Film Bearings with A Negative Cross-Coupled Stiffness Coefficient, Mechanism Machine Theory, v.20, 1985, p.181. 79. Unbalance Response of Rotor Disks Supported by Fluid Film Bearings with A Negative Cross- Coupled Stiffness Using Influence Coefficient Method, Mechanism Machine Theory, v.20, 1985, p.415 (A.M. Sharan) 80. Science and Technology in India, Science, v.229, # 4709, 1985, p.13 81. Nonsteady Force Measurement in An Orpheous Gas Turbine Engine Using Hydraulic Analogy, Def. Sci. Journal, v.35, 1985, p.391 (K.L. Awasthy, P.P.S. Sandhu) 82. Backward Whirl in A Simple Rotor Supported on Hydrodynamic Bearings, Instability in Rotating Machinery, NASA Conf. Publ. 2409, 1985, p.145 (R. Subbiah, R. Bhat, T.S. Sankar) 83. Identification of Multiloop Kinematic Chains and Their Paths, J Inst. of Engrs. (India), v.66, Pt ME1, 1985, p.6 (V.P. Agrawal) 84. Kinematic Chains with 3 to 5 Links/Loops, J of Engng. Des, v.1, #1, 1985, p.7 (V.P. Agrawal) 85. Blade Damping Measurement in A Spin Rig with Nozzle Passing Excitation Simulated by Electromagnets, Shock & Vib Bull, 56, Pt 2, 1986, p.109 (K. Gupta and N.S. Vyas) 86. Vibration Characteristics of Aircraft Engine-Blade Disk Assembly, Def. Sci. Journal, v.36, 1986, p.9 (C.B. Shah, Ch.L. Ganesh, Y.V.K.S. Rao) 87. Application of Reissner Method to Free Vibrations of a Tapered, Twisted, Aerofoil Cross-Section Turbine Blade, Mounted at A Stagger Angle on A Rotating Disc, Def. Sci. Journal, v.36, #3, 1986, p.273 (N.S. Vyas) 88. Fractionated Freedom Kinematic Chains and Mechanisms, Mechanism and Machine Theory, v.22, #2, 1987, p.125 (V.P. Agrawal) 89. Free Vibrations of Rotating Small Aspect Ratio Pre-Twisted Blades, Mechanism and Machine Theory, v.22, #2, 1987, p.159 (K. Gupta) 90. Turbomachine Blade Vibration, Shock Vib Digest, v.19, #5, 1987, p.3 91. Structural Classification of Kinematic Chains and Mechanisms, Mechanisms and Machines Theory, v.22, #5, 1987, p.489 (V.P. Agrawal)

34 Dr. J.S. Rao

92. On Mobility Properties of Kinematic Chains, Mechanisms and Machines Theory, v.22, #5, 1987, p.497 (V.P. Agrawal) 93. Transient Analysis of Rotors by Transfer Matrix Method, ASME Rotating Machinery Dynamics, DE- Vol 2, 1987, p.545 (K.V.B. Sarma & K. Gupta) 94. Effect of Downwash on the Nonsteady Forces in A Turbomachine Stage, ASME Bladed Disk Assemblies, DE-Vol 6, 1987, p.21 (V.V.R. Rao) 95. Towards Improved Design of Boring Bars Part 1: Dynamic Cutting Force Model with Continuous System Analysis for the Boring Bar Performance, Intl. J Mach Tools Manufact, Vol. 28, #1, 1988, p. 33 (P. N. Rao and U. R. K. Rao) 96. Towards Improved Design of Boring Bars Part 2: Solutions of the Generalized Model with Applications to the Analysis of Stability, Intl. J Mach Tools Manufact, Vol. 28, #1, 1988, p. 45 (P. N. Rao and U. R. K. Rao) 97. Resonant Stress Determination of A Turbine Blade With Modal Damping as A Function of Rotor Speed and Vibrational Amplitude, ASME 89-GT-27, (N.S. Vyas) 98. Coupled Bending-Bending Vibrations of Rotating Pre twisted Cantilever Blades - Method of Polynomial Frequency Equation, ASME H 0508A, 1989, p. 129, (P.V. Reddy, K.N. Gupta) 99. Identification and Isomorphism of Kinematic Chains and Mechanisms, Mech. Mach Theory, v.24, #4, 1989, p.309 (V.P. Agrawal) 100. The Design of Rotor Blades due to the Combined Effects of Vibratory and Thermal Loads, J Engng. Power and Gas Turbines, ASME, Vol. 111, No. 4, Oct. 1989, p. 610 (R. Bahree and A. M. Sharan) 101. Transient Stress Response of a Turbine Blade under Nonlinear Damping Effects, ASME, 1990, 90- GT-269, (N.S. Vyas) 102. Equations of Motion of a Blade Rotating with Variable Angular Velocity, J Sound and Vib, v. 155, No. 2, June 1992, p. 327 (N. S. Vyas) 103. Life Estimation of Gear Transmission Unit in a Turbine Generator Set due to Short Circuits, Mech. Machine Theory, v. 27, No. 3, p. 283, 1992 104. Dynamic Analysis of Gear Transmission Unit in a Turbine Generator Set due to Short Circuits, Engineering Design, J of National Design and Research Forum, Institution of Engineers (India), Vol. XXIII, # 4, Oct-Dec 1992, p. 49. 105. A Note on Quality Factor of Rotor with Hydrodynamic Bearings, J of Engng for Gas Turbines and Power, Trans ASME, v. 115, p. 261, 1993. 106. Life Estimation of Turbine Blades, BHEL Journal, v.14, No.1, p. 1, July 1993. 107. Shock in Rotor Blades During Speed Changes, J of Sound and Vibration, 176 (4), p. 531, 1994 (N. S. Vyas) 108. Fatigue Life Estimation Procedure for A Turbine Blade under Transient Loads, J of Engng for Power and Gas Turbines, Trans ASME, v. 116, January 1994, p. 198 (N. S. Vyas) 109. The Calculation of the Natural Frequencies of Multi-disk-rotor Systems Using the Influence Coefficient Method including the Gyroscopic Effects, Mech. and Machine Theory, v. 29, No. 5, July 1994, p. 739 (A. M. Sharan) 110. Overturning Stability of Three Wheeled Motorized Vehicles, J of Vehicle System Dynamics, vol. 24, No. 2, March 1995, p. 123 (A. Raman and S. Kale) 111. DYREMI - Computer Software for Dynamics of Reciprocating Machine Installations, The International J of Engineering Education, vol. 11, No. 6, 1995, p. 459 (Harmit Singh)

35 Dr. J.S. Rao

112. Determination of Blade Stresses under Constant Speed and Transient Conditions with Nonlinear Damping, J of Engng for Gas Turbines and Power, Trans ASME, vol. 118, No. 2, 1996, p. 424 (N. S. Vyas) 113. Dynamic Stress Analysis and A Fracture Mechanics approach to Life Prediction of Turbine Blades, Mechanism and Machine Theory, vol. 32, No. 4, 1997, p. 511 (N. S. Vyas and Sidharth) 114. Steady State Response and Stability of Rotating Composite Blades with Frictional Damping, ASME J Engng. Gas Turbines and Power, vol. 120, 1998, p.131 (T N Shiau, Y D Yu and S T Choi) 115. Application of Fracture Mechanics in the Failure Analysis of A Last Stage Steam Turbine Blade, Mechanism and Machine Theory, vol. 33, No. 5, 1998, p. 599 116. Theoretical Analysis of Lateral Response due to Torsional Excitation of Geared Rotors, Mechanism and Machine Theory, vol. 33, No. 6, 1998, p. 761 (T. N. Shiau, J. R. Chang) 117. Education and Research in Indian Institutes of Technology, The Indian Journal of Technical Education, v. 21, No. 3, 1998, p. 28 118. Dynamic Behavior of Geared Rotors, Journal of Engineering for Gas Turbines and Power, Trans ASME, July 1999,Vol.121, No.3 p.494 (T. N. Shiau, J. R. Chang and Siu-Tong Choi) 119. Transient Response of Rotating Laminated Plates with Interfacial Friction under Accelerating Conditions, Journal of Sound and Vibration, vol. 228, No. 1, 1999, p. 37 (Y. D. Yu and T. N. Shiau) 120. University-Government-Industry Interaction - Are We in the Right Direction?, The Indian Journal of Technical Education, v. 23, No. 2, 2000, p. 15 121. Blade Life - A Comparison by Cumulative Damage Theories, Journal of Engineering for Gas Turbines and Power, vol. 123, No. 4, 2001, p. 886 (A. Pathak and A. Chawla) 122. A Note on Jeffcott Warped Rotor, Mechanism and Machine Theory, vol. 36, 2001, p. 563 123. The Effect of Root, Lacing Rods and Disk on Turbomachine LP Rotor Blade Frequencies, Advances in Vibration Engineering, vol. 1, No. 2, 2002, p. 71 (A. K. Singh) 124. Computer Aided Design of Gears in Transmission Systems, Accepted for International Journal of Gearing and Transmissions (Tarun Puri and Jose John) 125. Life Estimation of Mechanical Components, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 1, No. 3, 2002, p. 207 126. Development of an Online Diagnostic system software for Turbogenerator Set of Kakrapara Atomic Power Station, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 1, No. 4, 2002, p.305 (A. Chawla, A. K. Darpe, Kapil Bharati, D. A. Roy, C. K. Pithawa, U. Chandra and A. Rama Rao) 127. Life Estimation of Tuned and Mistuned Turbine Blades using Linear and Nonlinear Cumulative Damage Theories, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 1, No. 4, 2002, p.322 (R. Rzadkowski) 128. Dynamic Analysis of Misaligned Rotor Systems, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 2, No. 1, 2003, p.1 (R. Sreenivas) 129. Turbomachine Blade Damping, Journal of Sound and Vibration, Volume 262, Issue 3, 1 May 2003, Pages 731-738 (Anil Saldanha) 130. Dynamic Analysis of Bowed Rotors, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 2, No. 2, 2003, p.128 (Manu Sharma) 131. Condition Monitoring of Power Plants through Internet, Integrated Manufacturing Systems: The International Journal of Manufacturing Technologies Vol 14, No 6, 2003, p. 508 (M. Zubair and C. Rao)

36 Dr. J.S. Rao

132. Effect of Interfacial Damping on the Blade Stresses, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 2, No. 3, 2003, p. 227 (A. K. Singh, S. Borate) 133. Solid Rotor Dynamics, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 2, No. 4, 2003, p. 305 (R. Sreenivas, C. V. Veeresh) 134. Dynamic Analysis of Combined Rotor-Bearing-Foundation System, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 3, No. 2, 2004, p. 107 (A. K. Singh, Narayan Sharma) 135. On-Line Vibratory Condition Monitoring and Diagnostics of Rotating Machinery, Pipeline, No. 10, p. 68, 2004 136. Dynamics of Asymmetric Rotors using Solid Models, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 3, No. 3, 2004, p. 272 (R. Sreenivas) 137. Transient Stress Analysis and Fatigue Life Estimation of Turbine Blades, ASME Journal of Vibration and Acoustics, vol. 126, October 2004, p.485 (D. Dhar and A. Sharan) 138. Mistuning Of Bladed Disk Assemblies to Mitigate Resonance, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 5, No. 1, 2006, p. 17 139. Transient Dynamics of Solid Rotors under high angular accelerations, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 5, No. 1, 2006, p. 25 140. Power Plant Asset Management through Real Time Remote Condition Monitoring and Diagnostics and Development of Knowledge Base, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 5, No. 4, 2006, p. 279 141. Implementing effective on-line condition monitoring and diagnostics to boost performance of turbomachinery and prevent catastrophic failures, Global Pipeline Monthly, Volume 2, Issue #11 - December 2006 142. of Sunroof Buffeting, SAE 2008-28-0059, p. 409 (M. Saravana Kumar and Ashish Singh) 143. Future of Fusion Energy for India, Business Economics, v. 14, No. 2, April 16-30 Issue, 2008, p. 45 144. Rotor Dynamics of Aircraft Gas Turbine Engines, Journal of Aerospace Sciences and Technologies, v. 60, No. 3, 2008, p. 169 145. Recent Advances in Optimization of Aerospace Structures and Engines, Vibration Problems ICOVP- 2007, Springer Proceedings in Physics, Vol 126, 2008, pp 323-333 146. Optimization and Lifing Simulation Accelerates Turbomachinery Design Process, International Review of Aerospace Engineering (I.RE.AS.E), December 2008, p. 551 147. Estimation of Dynamic Stresses in Last Stage Steam Turbine Blades under Reverse Flow Conditions, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 8, No. 1, p. 71, 2009 (K. Ch. Peraiah, Udai Kumar Singh) 148. Optimized Life Using Frequency and Time Domain Approaches, IUTAM Symposium on Emerging Trends in Rotor Dynamics, Ed. K. Gupta, p. 13, 2009, Springer 149. Engineering Mechanical Vibrations in 20th Century, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 8, No. 2, p. 1, 2009 150. Topology Optimization of Aircraft Wing, Journal of Aerospace Sciences and Technologies, vol. 61, No. 3, p. 402, August 2009 (S. Kiran, J. V. Kamesh, M. A. Padmanabhan, S. Chandra) 151. Torsional Dynamics of Discrete Systems Through Simulink, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 8, No. 3, p. 223, 2009, (Partha Dey and Baddam Rajeshwar)

37 Dr. J.S. Rao

152. Overturning Stability Analysis of Three Wheeled Motorized Vehicles Using Simulink, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 8, no. 4, p. 301, 2009 (Partha Dey and Baddam Rajeshwar) 153. Fracture Mechanics in TurboManager Quickens Blade Failure Investigations, International Review of Aerospace Engineering (I.RE.AS.E), vol. 2, No. 6, December 2009, p. 329 154. Automotive Driveline Simulation, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 9, no. 1, p. 1, 2010 (Vasanthakumar Mahadevappa, Partha Dey, Baddam Rajeshwar, Kumar Hebbale) 155. Rigid Rotor Balancing Using Optimization, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 9, no. 1, p. 25, 2010 (Vivek Nagabhushan) 156. Lifing of Turbomachinery Blades – A Process Driven Approach, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 9, no. 1, p. 71, 2010 (R. Narayan and M. C. Ranjith) 157. Blade Lifing – A Comprehensive and Process Driven Approach, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 9, no. 2, p. 177, 2010 (R. Narayan and M. C. Ranjith) 158. Blade Lifing with Material and Friction Damping, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 9, no. 3, p. 245, 2010, (R. Narayan, M. C. Ranjith, R. Rejin) 159. Recent Advances in Aero-Acoustics Problems, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 9, no. 4, p. 311, 2010, (M. Saravana) 160. Turbomachine Blade Damping, International Review of Aerospace Engineering (I.RE.AS.E), vol. 3, No. 6, December 2010, p. 304 161. Numerical Simulation of MHD effects on convective heat transfer characteristics of flow of liquid meta in annular tube, Journal of Fusion Engineering and Design, v. 86, issues 2-3, March 2011, p. 183 (Hari Sankar) 162. Total Powertrain System Optimization, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 10, no. 1, p. 1, 2011 163. Lifing of Automobile Structures and Drive Trains in Frequency Domain, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 10, no. 1, p. 19, 2011 (R. Narayan) 164. A Procedure to Predict Influence of Acceleration and Damping of Blades Passing Through Critical Speeds on Fatigue Life, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 10, no. 2, p. 89, 2011 (S. Suresh, Rejin Ratnakar and R. Narayan) 165. India's Contributions over the last 40 years in Turbine Blade Dynamics, Technology Developments: the Role of Mechanism and Machine Science and IFToMM, Ed Marco Ceccarelli Springer Publication 2011, pp43-57 166. Condition Monitoring System, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 11, no. 3, p. 245, 2012 (K. J. V. P. R. Swaroop, Narayan Rangarajan and Shashi Mantrawadi) 167. Use of Metamodels in Crash Optimization, Advances in Vibration Engineering, Journal of Vibration Institute of India, vol. 11, no. 4, p. 404, 2012 (Bigil Kumar) 168. Transient Forward and Backward Whirl of Beam and Solid Rotors with Stiffening and Softening Effects, Advances in Vibration Engineering, J of Vibration Institute of India, vol. 12, no. 1, p. 59, 2013 169. Solid Rotor Models and Gyroscopic Effects, Journal of Vibration Engineering & Technologies, vol. 2, Number 6, December 2014 p. 469 170. Advances in Aero Structures, Science Direct, Procedia Engineering, Elsevier 2016. 171. Crisis in Engineering Education Today, Paper sent to Indian Society of Technical Education 38 Dr. J.S. Rao

172. Gravitational Waves and Engineering Aspects of Thermal and Earth Quakes of Earth, to be published in Journal of Vibration Engineering and Technologies

15. CONFERENCE PAPERS (Co-authors indicated in brackets)

1. Analysis of Stresses in Cutting Tools, Proc. 8th Congress Ind. Soc. Theo. and Appld. Mechanics, 1963, p.219 2. Longitudinal and Torsional Oscillations of Fixed-Fixed Systems, Proc. 9th Congress Ind. Soc. Theo. and Appld. Mechanics, 1964, p.128 3. Fundamental Torsional Vibration of A Cantilever Beam of Triangular Cross-Section with Uniform Taper, Proc. 10th Congress Ind. Soc. Theo. and Appld. Mechanics, 1965, p.66 4. Correction Factors for The Effect of Taper on The Torsional Oscillations of Cantilever Beams, Proc. 11th Congress Ind. Soc. Theo. and Appld. Mechanics, 1966, p.189 5. Flexural Vibrations of Simply Supported Beams, Proc. 11th Congress Ind. Soc. Theo. and Appld. Mechanics, 1966, p.128 (K.B.V. Reddy) 6. Coupled Bending Torsion Vibrations of Cantilever Beams, Proc. 2nd World Cong. IFToMM, v.3, 1969, p.19 7. Application of Ritz and Galerkin Processes to Turbine Blade Vibration Problems, Proc. 15th Cong. Ind. Soc. Theo. Appld. Mechanics, 1970, p.79 8. Flexural Vibration of Simply Supported Beams with Overhangs, Proc. 4th Cong. All Ind. Machine Tool Des Res., 1970, p.361 9. Longitudinal Vibrations of Stepped Bars, Proc. 15th Cong. Ind. Soc. Theo. Appld. Mechanics, 1970, p.11 (B.M. Belgaumkar, M.K. Khashu) 10. Ball Bearing Noise, Proc. 3rd. World Cong. IFToMM, 1971, v.E, p.273 (R.J. Lalwani) 11. A Theoretical Study of the Effects of Variable Inertia on the Torsional Vibrations of a Single Cylinder Engine, The Institution of Marine Engineers, 17th November 1971 (W. Carnegie and M. S. Pasricha) 12. Computer Aided Design of Machine Tool Structures, Proc. 5th Cong. All Ind. Machine Tool Des Res, 1972, p.381 (A.K. Pani, S.C. Das) 13. Crankpin Forces and Torques and Vibration in ZDM2 Diesel Loco Drive Part 1, Proc. 16th Cong. Ind. Soc. Theo. Appld. Mechanics, 1972, p.61 (J. Banerji) 14. Vibrations in The ZDM2 Diesel Loco Engine-Part 2, Proc. 16th Cong. Ind. Soc. Theo. Appld. Mechanics, 1972, p.75 (J. Banerji, B. Bhattacharyya) 15. Derivation of Equations of Motion for Lateral Vibrations of Four Bar Mechanisms, Proc. Vibrations Conf., IIT New Delhi, 1972, p.77 (K.N. Gupta) 16. A General Theory of Vibration of Sandwich Beams, Proc. 17th Cong. Ind. Soc. Theo. Appld. Mechanics, 1972, p.30 (D.K. Rao) 17. The Application of Collocation Method to Determine Natural Frequencies of Turbine Blades, Proc. 17th Cong. Ind. Soc. Theo. Appld. Mechanics, 1972, p.211 18. Equations of Motion of Rotating Pre-Twisted Cantilever Blades in Bending-Bending- Torsion with Effects of Warping, Shear and Rotary Inertia, etc., Proc. Silver Jubilee Sessions of Aero Soc. (India), 1973, p.4.3 (D.K. Rao) 19. Vibration of Infinite Beams on Foundation with A Moving Force, Proc. 4th Canadian Cong. Appld. Mechanics, 1973, p.429 (D.K. Rao) 20. Some Investigations of The Dynamic Stability of The Coupler of A Crank Rocker Mechanism, Proc. Symp. on Linkages and Computer Des Methods, IFToMM, v.1, 1973, p.589 (K.N. Gupta) 39 Dr. J.S. Rao

21. The Effect of Chuck Inertia on Lateral Vibration Characteristics of Machine Tool Spindles, Proc. 6th Cong. All Ind. Machine Tool Des Res, 1973, p.175 (U.V. Rao) 22. A Refined Theory of Torsional Vibration of Bars, Proc. Shock and Vib Conf., Melbourne, Australia, 1974, p.171 23. Application of Variational Principle to Shrouded Turbine Blades, Proc. 19th Cong. Ind. Soc. Theo. Appld. Mechanics, 1974, p.93 24. Effects of Taper and Centrifugal Force on The Frequencies of Rotating Blades: Theoretical Analysis, Proc. 19th Cong. ISTAM, 1974, p.27 (M. Swaminadham) 25. Turbomachinery Blade Vibration: Effects of Asymmetry Disk Radius and Rotation, Proc. 6th Canadian Cong. Appld. Mechanics, 1975, p.321 (S. Banerji) 26. Experimental Determination of Jump Characteristics in Cam Follower Systems, Proc. 4th World Cong. IFToMM, 1975, p.951 (E. Raghavacharyulu) 27. Analysis of Torsional Vibrations of Diesel Engines by A Digital Computer, Ind. Natl. Conf. I.C. Engines and Computation, Durgapur, 1975, p.v5 (D.K. Rao) 28. On Jump Phenomenon of Cam Follower Systems, Proc. 20th Cong. Ind. Soc. Theo. Appld. Mechanics, 1975, p.283 (E. Raghavacharyulu) 29. Torsional Vibration of Machine Tool Drives, Proc. 7th Cong. All Ind. Machine Tool Des Res, 1976, p.29 30. Resonant Amplitudes of Machine Tool Drives in Torsional Vibration, Proc. Indo-British Conf. Prod Engng, IIT New Delhi, 1976, p. B41 31. Lift and Moment Fluctuations of A Cambered Aerofoil Moving Through Non-Convecting Streamwise Gust, Proc. 21st Cong. ISTAM, 1976, p.391 (S.S.P. Rao, V.Mukhopadhyay) 32. Unsteady Blade Forces, Proc. 6th Canadian Cong. Appld. Mechanics, 1977, p.693 (S. S. P. Rao, V. Mukhopadhyay) 33. Continuous System Analysis for Boring Bar Performance, Proc. Intl. Conf. Prod Engng., IIT New Delhi, 1977, p.v153 (P.N. Rao, U.R.K. Rao) 34. Comparison of Jump Characteristics of Different Cam Follower Systems by Continuous Mass Model Approach, Proc. Intl. Symp. Linkages and Computer Aided Des Methods, Bucharest, 1977, v.III-2-505 (E. Raghavacharyulu) 35. Relations for Natural Frequencies of Turbine Blading, Proc. 22nd Cong. Ind. Soc. Theo. Appld. Mechanics, 1977, p.34 (S. Banerji) 36. Dynamic Response of The Bridge Girders of EOT Cranes Due to Staggered Rail Joints, Proc. 23rd. Cong. Ind. Soc. Theo. Appld. Mechanics, 1978, p.1 (V.V. Satyanarayana, D.P. Ghosh) 37. Turbine Blade Vibration, Proc. 23rd. Cong. ISTAM, 1978, p.150 38. Analysis of A Cantilever Beam Under A Steady Lateral Force, Proc. 23rd. Cong. Ind. Soc. Theo. Appld. Mechanics, 1978, p.113 (K.B. Subrahmanyam, S.V. Kulkarni) 39. Turbomachinery Blade Vibration Due to Self Excitation and Neighboring Cascade Effects, Proc. 8th Natl. Conf. on Fluid Mechanics Fluid Power, 1978, p.63 (S. S. P. Rao, V. Mukhopadhyay) 40. Turbomachine Blade Vibration, Proc. 5th World Cong. IFToMM, 1979, p.637 41. On The Development of The Shuttle Mechanism of The Power Loom, Proc. 5th World Cong. IFToMM, 1979, p.1380 (D.Y. Bibikar) 42. Modeling of Boring Bar Performance, Proc. 8th Cong. All Ind. Machine Tool Des Res, 1979, p.293 (P.N. Rao, U.R.K. Rao) 43. In-extensional Vibration of Pre-Twisted Cantilever Plates, Proc. 7th Canadian Cong. Appld. Mech., 1979, p.445 (K. Gupta)

40 Dr. J.S. Rao

44. Static Bending of Pre-Twisted Cantilever Blading, Proc. 24th Cong. Ind. Soc. Theo. Appld. Mechanics, 1979, p.37 (K.B. Subrahmanyam, S.V. Kulkarni) 45. The Transient Response of Turbomachine Rotor Systems Under Short Circuiting Conditions, 2nd Intl. Conf. Vibrations Rotating Machinery, I. Mech. E, 1980, p.271 (K.V.B. Sarma, D.K. Rao) 46. Dynamic Performance of Boring Bars, 4th Intl. Conf. Prod Engng., Japan, 1980, p.428 (P.N. Rao, U.R.K. Rao) 47. Vibrations of Rotating Small Aspect Ratio Blades, 15th Intl. Cong. Theo. and Appld. Mechanics, Toronto, 1980, p.131 (K. Gupta) 48. Coupled Bending-Bending-Torsion Vibrations of Turbomachine Blading Treated by Reissner Method, Proc. 25th Cong. ISTAM, 1980 (K.B. Subrahmanyam, S.V. Kulkarni) 49. Self Excited Vibration of Turbomachine Blades, Proc. 5th ISABE Symp. Air Breathing Engines, Bangalore, 1981 (S. S. P. Rao, V. Mukhopadhyay) 50. Static Bending of Asymmetric Aerofoil Blading, 26th Cong. Ind. Soc. Theo. Appld. Mechanics, 1981, p.186 (K.B. Subrahmanyam, S.V. Kulkarni) 51. Free Vibrations of Helicoidal Shells: Effect of In-Plane Displacements on Its Solution, Proc. 8th Canadian Cong. Appld. Mechanics, 1981, p.369 (K. Gupta) 52. Unbalance Response of A Rotor in Hydrodynamic Bearings with Damping, Proc. 8th Canadian Cong. Appld. Mechanics, 1981, (R. Bhat, T.S. Sankar) 53. Coupled Bending-Bending-Torsion Vibrations of Turbomachine Blading Treated by Reissner Method, Natl. Conf. Mechanisms and Machines, Bombay, 1981, p. R-19, (K.B. Subrahmanyam, S.V. Kulkarni) 54. Rotor Dynamics of High Speed Machines, Keynote Lecture, Natl. Conf. Mechanisms and Machines, Bombay, 1981, p.LR1 55. Brake Squeal Study, 10th IMACS World Cong. Systems Simulation Scientific Computation, Montreal, 1982, p.165 (K. Gupta) 56. Hydraulic Analogy for Non ideal Compressible Gas Flows, Proc. IFToMM Intl. Conf. Rotor Dynamic Problems in Power Plants, Rome, 1982, p.267 (V.V.R. Rao, V. Seshadri) 57. Forced Vibration of Rotating Pre-Twisted Blades, Proc. IFToMM Intl. Conf. Rotor Dynamic Problems in Power Plants, Rome, 1982, p.259 (H.M. Jadwani) 58. Nonlinear Vibration Analysis of Cam Follower Systems with Pneumatic Coupling, Proc. 6th World Cong. IFToMM, v.2, 1983, p.1213 (E. Raghavacharyulu) 59. Effect of Reynolds Number on The Accuracy of Hydraulic Analogy in Simulation of Compressible Gas Flow, Proc. 12th Natl. Conf. Fluid Mechanics Fluid Power, New Delhi, 1983, p.277 (V.V.R. Rao, V. Seshadri) 60. Single Blade Dynamics, Proc. 6th IFToMM TC Rotor Dynamics, 1983, p.41 61. Turbomachinery Blade Dynamics, Proc. 28th Cong. Ind. Soc. Theo. and Appld. Mechanics, p.1, 1983 62. Effect of Vibration on Surface Finish in Boring, Proc. Conf. Machine Tool Des, Varanasi, 1984, p.13 (P.N. Rao, U.R.K. Rao) 63. Nonsteady Forces in A Turbomachine Stage, Proc. Intl. Conf. Vibrations Rotating Machinery, I. Mech. E, 1984, p.243 (V.V.R. Rao, V. Seshadri) 64. Brake Squeal Problem in Under Ground Trains, Proc. Intl. Conf. Vibrations Rotating Machinery, I. Mech. E, 1984, p.337 (N.F. Rieger) 65. Simulation of Multi shaft Rotors Mounted on Fluid Film Bearings To Determine Unbalance Response, Proc. Intl. Conf. Power Plant Simulation, Mexico, 1984, p.85 (K.V.B. Sarma)

41 Dr. J.S. Rao

66. Fluid Structure Interaction Problems in Turbine Blade Vibration, Recent advances in Fluid Structure Interaction, ASME Publication, p. 89, 1984, (D. K. Gupta, C. V. Ramakrishnan) 67. Response of Steam Turbine Blades Subjected to Distributed Harmonic Nozzle Excitation, Proc. 3rd. Intl. Modal Analysis Conf., 1985, p.618 (N.S. Vyas) 68. Fractionated Freedom Kinematic Chains and Mechanisms, Natl. Conf. Machines and Mechanisms, Bangalore, 1985, p.13 (V. P. Agrawal) 69. Free Vibrations of Rotating Small Aspect Ratio Pre-Twisted Blades, Natl. Conf. Machines and Mechanisms, Bangalore, 1985, p.125 (K. Gupta) 70. On Structural Analysis of Kinematic Chains and Mechanisms, Natl. Conf. Machines and Mechanisms, Bangalore, 1985, p.61, (V.P. Agrawal) 71. Development of Energy in India During 1950-85 and Its Future Perspectives, Search for A Bridge to the Energy Future, Proc. Intl. Conf. on the Development of Alternative Energy Sources and the Lessons Learned Since the Oil Embargo, 1986, p.145, Grand Forks, ND. 72. On Transient Dynamics of Rotors with Asymmetric Cross-Section Supported on Fluid Film Bearings, 4th Intl. Conf. Modal Analysis, 1986, p.1110 (K.V.B. Sarma) 73. Analytical and Experimental Investigations on Vibratory Stresses of A Rotating Steam Turbine Blade Under NPF Excitation, Proc. IFToMM Intl. Conf. Rotor Dynamics, 1986, p.289, (N.S. Vyas, K. Gupta) 74. Coupled Bending-Bending Vibrations of Stationary Pre twisted Cantilever Blades - Method of Polynomial Frequency Equation, Proceedings of the 7th World Congress of IFToMM, September 1987, Seville, Spain, p. 697 (P.V. Reddy & K.N. Gupta) 75. Transient Response of Turbine Blade, Proceedings of the 7th World Congress of IFToMM, September 1987, Seville, Spain, p.697 (N.S. Vyas and K. Gupta) 76. On Life Estimation of Turbine Blading, Proc. of Rotor Dynamics Technical Committee meeting of IFToMM at the 7th World Congress, September 1987, Spain (N.S. Vyas) 77. Dynamic Response of Dual Rotor Systems by Extended Transfer Matrix Method, Proceedings I. Mech. E. Conf. Vibrations in Rotating Machinery, Edinburgh, UK, September 1988, p.599 (K. Gupta K.V. Bhaskara Sarma and K D Gupta) 78. The Design of Rotor Blades due to the Combined Effects of Vibratory and Thermal Loads, Proc. 10th Natl. Heat and Mass Transfer Conf., 1989, Srinagar, p. 275, (R. Bahree and A. M. Sharan) 79. Possible Scenarios of Power Generation in the next 3 decades, Electrical Energy and Environment, National Academy of Engineering, India, April 1990, p. I-39 80. Turbomachine Blade Excitation due to Stage Flow Interaction, Advances in Mechanical Engineering, Proc. 7th ISME Conf., Feb. 1990, p.16 81. Coupled Axial Bending-Torsion Vibration Modes of Packeted Blades by Variational Method, Advances in Mechanical Engineering, Proc. 7th ISME Conf., Feb. 1990, p. 36 (A. Cameron, G. S. Sekhon, and Y. Nath) 82. An Examination of Errors in Modified Hydraulic Analogy, 3rd. Intl. Conf. Rotor Dynamics, Sept. 1990, p. 245, Lyon, France 83. Interfacial Damping in Blade Attachment Region, 3rd. Intl. Conf. Rotor Dynamics, Sept. 1990, p. 185, Lyon, France (M.A.W. Usmani, C.V. Ramakrishnan) 84. Significance of Damping Models and Temperature Distribution in Determining the Response of Turbomachine Blading, Intl. Conf. on Advances in Structural Testing, Analysis and Design, p. 397, 1990 85. Dynamic Analysis of Gear Transmission Unit in a Turbine Generator Set due to Short Circuits, Proc. 6th Natl. Convention of Mechanical Engineers, October 1990, Bangalore, Tata McGraw Hill Publication, 1990

42 Dr. J.S. Rao

86. Camsoft: An Interactive Computer Software for Design and Manufacture of Plate Cams, 35th Cong. ISTAM, December 1990, Madras (M. Ramakrishna, S. Sen Gupta, P. N. Rao) 87. Modified Hydraulic Analogy for the Study of Axisymmetric Gas Dynamic Flows, Presidential Address, 35th Cong. ISTAM, December, 1990, Madras. 88. An Examination of Errors in Modified Hydraulic Analogy with Straight Oblique Shock, 8th IFToMM Congress, vol. 3, p. 767, August 25-30, 1991, Prague. 89. Calculation of Blade Stresses under Steady and Accelerating Conditions with Nonlinear Damping, Session Proceedings, Forced Vibrations of Turbomachine Blades, 8 IFToMM World Congress TMM, August 25-31, 1991, Prague (N. S. Vyas) 90. Belgaumkar's Cantilever Beams, National Conference on Design Engineering, NACOMM 91, Dec. 12-14, 1991, p. 1, Madras 91. Equations of Motion through Variational Principle, Presidential address, 36th ISTAM congress, Dec. 19, 1991, Bombay 92. Effect of Electrical Short Circuits on the Mechanical and Dynamic Performance of Large Rotating Machines used in Power Plants, Third Intl. Conf on Electrical Rotating Machines, Session II B - Paper 9, p. 27, 15-16 January, 1992, Bombay 93. An Expert System for Off-Line Condition Monitoring of Rotating Machinery, 4th International Symposium on Transport Phenomena and Dynamics in Rotating Machinery (ISROMAC-4), p. 502, April 5-8, 1992, Honolulu (P. N. Rao, A. Mehra) 94. Nonsteady Forces in A Turbomachine Stage - Experimental Verification, Proc. I Mech. E Conference Vibrations in Rotating Machinery, Bath, September 1992, C432-008 (P. B. Sharma, K. V. Subba Rao, S. Tandon) 95. Application of Expert Systems in Condition Monitoring of Rotating Machinery, Key note address, Proc. X Natl. Conference on Industrial Tribology, Vol. II, p. 385, March 24-25, 1993, Dehradun 96. Computers and Their Application in Analysis, Design and Maintenance, Key note address, Proceedings Computer Aided Plant Engineering and Design Conference, Power and Process Engineers Society of India, April 22, 1993 97. A Fracture Mechanics Approach to Life Prediction of Turbine Blades, ASME 93-GT-406 (N. S. Vyas, Sidharth) 98. Future Perspective Condition Monitoring with special Emphasis on Expert systems, Proceedings of the National Seminar on Frontiers of Tribology and Condition Monitoring, IIT Madras, June 19, 1993, p. 87. 99. Information Technologies - Past Present and Future, Proceedings VII International Congress and Exhibition of National Foundation of Indian Engineers, November 23-25, 1993, p. 83. 100. Fracture Mechanics Approach for Blade Failures, Indo-German Workshop "Advances in Fracture Mechanics", 28 March to April 1, 1994, p. 94, Bangalore (N S Vyas) 101. Blade and Rotor Dynamic Problems of Turbo Generator Sets in Indian Power Sector, INSAC-94, February 28-March 2, 1994, Bombay, p. IV-24. 102. On-Line Expert System for Rotor Fault Diagnosis, Proc. Turbo Machinery Asia'94, July 20-23, 1994, p. 94, Singapore. (Girish A Shingote) 103. Blade and Rotor Dynamics in an Atomic Power Plant Accident, Proc. Ninth World Congress on the Theory of Machines and Mechanisms, Milan, August 30 - September 2, Vol. 2, 1995, p. 1334 (A. K. Singh and K. V. Bhaskara Sarma)

43 Dr. J.S. Rao

104. Computer Aided Learning of Planar Linkages, Proc. Ninth World Congress on the Theory of Machines and Mechanisms, Milan, August 30 - September 2, Vol. 4, 1995, p. 3176 (V. P. Agarwal, A. Vardhan and L. Lamba) 105. Fracture Mechanics Analysis of A Steam Turbine Blade Failure, Proc. 1995 Design Engng Technical Conferences, DE-Vol. 84-2, ASME, p. 1173, September 17-21, 1995, Boston. 106. Coupled Bending-Torsion Vibration of Geared Rotors, Proc. 1995 Design Engng Technical Conferences, DE-Vol. 84-2, ASME, p. 977, September 17-21, 1995, Boston. (J. R. Chang and T. N. Shiau) 107. Role of Electrical Problems in the Failure of Narora Power Plant, PEDES'96, New Delhi, 8-11 January 1996, p. 154. 108. Blade Stresses and Life Estimation under Flow Path Excitation, Proc. 6th Intl. Symp. on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, February 26-28, 1996, Vol. 1, p. 252 (N. S. Vyas and K. V. Subba Rao) 109. Development of an Off-Line Expert System for Condition Monitoring of an Aircraft Engine, Proc. 6th Intl. Symp. on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, 1996, Vol. 1, p. 455 (A. Chawla and C. Dattagupta) 110. Steady State Response and Stability of Rotating Composite Blades with Frictional Damping, ASME 96-GT-469, June 1996, Birmingham (T N Shiau, Y D Yu, S T Choi) 111. Dynamic Response in Simple Geared Rotor Bearing System, I Mech. E Conference Transactions, Sixth Intl. Conf. on Vibrations in Rotating Machinery, Oxford, September 1996, p. 599 (T. N. Shiau, J. R. Chang) 112. Dynamic Characteristics of Two Different Systems with Variable Inertia controlled by Same Equations, I Mech. E Conference Transactions, Sixth Intl. Conf. on Vibrations in Rotating Machinery, Oxford, September 1996, p. 609 (V. Oravsky) 113. Dynamic Behavior of Geared Rotors, ASME 97-GT-187, Orlando (T. N. Shiau, J. R. Chang and Siu- Tong Choi) 114. Vibration Analysis of Rotating Cambered Helicoidal Turbomachine Blades, ASME 97-GT-299, Orlando (C. V. Ramakrishnan, K. Gupta and K. K. Rao) 115. Electrical and Mechanical Problems in the Operation of Power Plants - Failure of Narora Turbo- Generator Set, Intl. Conf. Power Generation, System Planning and Operation, 12-13 December 1997, New Delhi 116. Optimum Dynamic Design of Rotor Systems, IUTAM-IITD Intl. Winter School on Optimum Dynamic Design using Modal Testing and Structural Dynamic Modification, 15-19 December, 1997, New Delhi, p. 319 117. Application of Local Stress-Strain Approach to Predict Fracture Initiation of A Francis Turbine Runner Blade, ISROMAC-7, Hawaii, February 22-26, 1998, vol. B, p. 674 (P. K. Nimbekar, R. Misra and A. K. Singh) 118. Blade and Rotor Bearing Failures - The Role of State of Art Multifaceted Technologies in Investigations of A Nuclear Power Plant Accident, Keynote Speech, ISROMAC-7, Hawaii, February 22- 26, 1998, vol. A, p. 1 also Keynote Address NACOM - 97, p. K-57 119. Dynamic Stresses of Cambered Helicoidal Turbomachine Blades Due to Aerodynamic Excitation, ASME 98-GT-356 (C. V. Ramakrishnan, K. Gupta and K. K. Rao) 120. Effect of Blade Thickness on the Potential Interaction of Turbomachine Stage in Incompressible Flow, Proc. FEDSM‟98, 1998 ASME Fluids Engineering Division Summer Meeting, June 21-25, Washington, D. C., FEDSM98-4880 (V. Seshadri)

44 Dr. J.S. Rao

121. Crack Initiation and Propagation of Blades - Fracture Mechanics Approach, Keynote Address, Proc. Korea Fluid Machinery Association Annual Conference, February 18, 1998, p. 11 122. Mechanical Engineering Research Scholar - Will He Be Extinct Soon? 11th National Conference of Indian Society of Mechanical Engineers, February 2-3, 1999, p. 46 123. Blade Life - A Comparison by Cumulative Damage Theories, ASME 99-GT-287 (A. Pathak and A. Chawla) 124. James Watt - Two Hundred Years After His Retirement, 10th World Congress on the Theory of Machines and Mechanisms, Oulu, Finland, June 20-24, 1999, vol. 1, p. 63 125. University-Government-Industry Interaction Are We in the Right Direction? Symposium on Technical Education in India in the Next Millennium – Our Preparedness, October 23, 1999, Technical Teachers‟ Training Institute, Bhopal, p. 23 126. Computer Aided Designing and Learning of Gears, Proc. NACOM-99, 16-17 December 1999, Bombay, p. 187 (Tarun Puri and Praveer Gupta) 127. Development of an On-Line Diagnostic System Software for a Turbogenerator Set, 8th ISROMAC, vol. II, p. 1156, March 27-30, 2000, Hawaii (A. K. Darpe, J. John and A. Bhatnagar) 128. Iron Age of Ancient India, Intl Symposium on History of Machines and Mechanisms – Proc. HMM 2000, May 11-13, 2000, Cassino, Italy, Kluwer Academic Publishers, p. 217 129. Elasto Plastic Stress Analysis of LP Steam Turbine Blades Under Centrifugal Loading, ASME-2000- GT-0569, IGTI, Munich, May 8-11, 2000, (A. K. Singh, C. V. Ramakrishnan and K. Gupta) 130. Computer Aided Design of Gears in Transmission Systems, Proc. International Conference on Gearing, Transmissions and Mechanical systems, Nottingham, UK, 3-6 July 2000, p.213 (Tarun Puri and Jose John) 131. Condition Monitoring of Power Plants through Internet, Proc. International Conference on Gearing, Transmissions and Mechanical systems, Nottingham, UK, 3-6 July 2000, Additional Volume, p.1 (M. Zubair and C. Rao) 132. Elastic Plastic Fracture Mechanics of a LP Stage Steam Turbine Blade Root, 5th ASME Annual Engineering Systems Design & Analysis, Montreux, July 10-13, 2000 (A. K. Singh, C. V. Ramakrishnan, K. Gupta) 133. Development of an Online Diagnostic system software for Turbogenerator Set, Proc. International Symposium on Machine Condition Monitoring and Diagnosis, 2000 JSME Annual Meeting, Aug 1-4, 2000, p. 18 134. Life Estimation of Mechanical Components, 2nd Asia-Pacific Conference on Systems Integrity and Maintenance & Exhibition (ACSIM), 23-25 August 2000, Nanjing 135. The Effect of Non Linear Damping on the Resonant Stresses in Turbomachine LP Rotor Blades, I Mech. E. Vibrations In Rotating Machinery, Conf. Trans., 12-14, September 2000, Nottingham, UK, p. 45 (A. K. Singh, C. V. Ramakrishnan, K. Gupta) 136. Effect of Stator Viscous Wakes on the Non-steady Lift of Rotor Blades, 2nd ISFMFE, October 2000, Beijing (K. V. Subba Rao) 137. Life Estimation of a Mistuned Turbine Blades Using the Linear and Nonlinear Cumulative Damage Theories, CP 053, VETOMAC-I, 25-27 October 2000 (R. Rzadkowsky) 138. Development of an Online Diagnostic system software for Turbogenerator Set of Kakrapara Atomic Power Station, CP 021, VETOMAC-I, 25-27 October 2000, (A. Chawla, A. K. Darpe, Kapil Bharati, D. A. Roy, C. K. Pithawa, U. Chandra and A. Rama Rao) 139. Dynamic Analysis of Bowed Rotors, CP 022, VETOMAC-I, 25-27 October 2000, (Manu Sharma) 140. Dynamic Analysis of Misaligned Rotors, CP 048, VETOMAC-I, 25-27 October 2000 (R. Sreenivas)

45 Dr. J.S. Rao

141. The Effect of Root, Lacing Rods and Disk on Turbomachine LP Rotor Blade Frequencies, CP 049, VETOMAC-I, 25-27 October 2000, (A. K. Singh) 142. Aeroengine Blade Vibration, Recent Progress and Future Needs, ICRAMS2000, Kharagpur, December 20-22, 2000, Applicable Its Perspectives and Challenges, Narosa, 2000, (Ed. J. C. Misra), p. 502 143. Computer Aided Analysis of One-dimensional Linear Vibrating Systems, 45th Indian Society of Theoretical and Applied Mechanics congress, Sivakasi, December 26-29, 2000 (Rohit Govil and Nitin Navish Gupta) 144. Condition Monitoring of Power Plants Through Internet, Keynote Address, Industrial Automation and Applications, Proc. IPRoMM 2000, 19-20, January 2001, Nagpur 145. Condition Monitoring of Gear Boxes in Real Time, The International Conference on Mechanical Transmissions, 5-8 April, 2001, Chongqing, China ( Pramod Bhatia and Shalabh Agarwal) 146. Experimental Investigation of Misaligned Rotors, ASME 2001-GT-0253, June 4-7, 2001, (R. Sreenivas and A. Chawla) 147. Gearbox Failure of A Turbogenerator Set, ASME 2001-GT-0235, June 4-7, 2001, (K. Ch. Peraiah) 148. Computer Aided Analysis of Nonlinear Vibrating Systems, 2001 DTEC, September 9-13, 2001 (Tarun Puri) 149. Estimation of Blade Damping Using ANSYS, ANSYS Users Symposium, Bangalore, December 6, 2001 (A. Saldanha) 150. Solid Model Rotor Dynamics using ANSYS, ANSYS Users Symposium, Bangalore, December 6, 2001 (C.V. Veeresh) 151. Turbomachine Blade Damping, Proceedings 2001 Indo-USA Symposium on Emerging Trends of Vibration and Noise Engineering, Columbus, December 10-12, 2001, U-034 (A. Saldanha) 152. Analytical and Experimental Investigations on Misaligned Rotors, DD-ABS-025, ISROMAC-9, 2002 (R. Sreenivas, A. Chawla) 153. Dynamic Analysis of Combined Rotor-Bearing-Foundation System, ASME IGTI PWP, 02-JA-049, Amsterdam, June 2002 (Singh, A. K. and Narayana Sharma) 154. Solid Rotor Dynamics, Fourteenth U.S. National Congress of Theoretical and Applied Mechanics, Blacksburg, VA, 23-28 June 2002 (R. Sreenivas and C. V. Veeresh) 155. Rotor Dynamics Comes of Age, Keynote address, Sixth IFToMM International Conference Rotor Dynamics, Sydney, September 30-October 3, 2002, vol. I, p. 15 156. Effect of Interfacial Damping on Blade Stresses, Sixth IFToMM International Conference Rotor Dynamics, Sydney, September 30-October 3, 2002, vol. I, p. 146 (AK Singh and S Borate) 157. On-line Diagnostics Using the Internet, ACSIM 2002, Proc. 3rd Asia Pacific Conference Systems Integrity and Maintenance, (S. Sharma, Gupta, T and Zubair, M), p. 268 158. Recent Advances in India for Airframe & Aero Engine Design and Scope for Global Cooperation, AECMA-SIATI, Aero Technologies Summit, November 26-28, 2002, Bangalore 159. Recent Shifts in Rotor Dynamics Analysis Merging with Structural Dynamics, VETOMAC-II, December 16-18, 2002, Mumbai 160. ANSYS Takes Away Mysteries of Rotor Dynamics, Proc. ANSYS Users Conference India 2002, paper 14.quest, Bangalore 161. Recent Advances in Aero Engine Rotor Analysis and Design, Society of Indian Aerospace Technologies & Industries, 11th Anniversary Seminar, February 8, 2003, Bangalore 162. Bird Impact on Rotating Fan Blades, 2nd Indian LS-DYNA Users Conference, Chennai, Feb 20-21, 2003 (S. Srinivas)

46 Dr. J.S. Rao

163. Power Plant Rotor Dynamics for Seismic Analysis and On-Line Condition Monitoring with Expert Diagnostics, Seminar on Seismic Qualification of Equipment, Central Power Research Institute, Bangalore 28-29 April 2003, p. 84 164. Dynamics of A Three Level Rotor System Using Solid Elements, ASME GT 2003-38783, June 16- 19, 2003, Atlanta (R. Sreenivas) 165. Dynamics of Asymmetric Rotors using Solid Models, International Gas Turbine Congress 2003 Tokyo, 8th Congress in Japan, IGTC2003Tokyo TS-016, November 3-7, 2003, Tokyo (R. Sreenivas) 166. Design and Engineering of Turbines in India, Proceedings 17th National Conference In-House R&D in Industry, 10-11 November, 2003, New Delhi, p. 141 167. Power Plant Asset Management through Real Time Remote Condition Monitoring and Diagnostics and Development of Knowledge Base, Inaugural address, National Symposium on Rotor Dynamics – NSRD2003, IIT, Guwahati, 15-17 December 2003 168. Recent Developments in Structural Design Aspects of Aircraft Engines, National Conference on Association of Machines and Mechanisms, IIT, New Delhi, 18-19 December 2003, Professor B M Belgaumkar Memorial and Inaugural Lecture 169. Recent Trends in Blade Design of Turbomachinery, Plenary Talk, The 5th Annual Australian Gas Turbines Conference, 28-29 July, 2004, Brisbane. 170. Dynamics of High Speed Cryo Pump Rotors, 8th International I Mech E Conference on Vibrations in Rotating Machinery, 7-9 September 2004, C623/103/2004, p.467 (R. Sreenivas, Paul P George) 171. Mistuning of Bladed Disk Assemblies to Mitigate Resonance, A Fusion of Harmonics, Proc. of the 3rd International Conference on Vibration Engineering and Technology of Machinery and the 4th Asia- Pacific Conference on System Integrity and Maintenance, vol. II, p. 802, December 6-9, 2004, New Delhi 172. Transient Dynamics of Solid Rotors under high angular accelerations, A Fusion of Harmonics, Proc. of the 3rd International Conference on Vibration Engineering and Technology of Machinery and the 4th Asia-Pacific Conference on System Integrity and Maintenance, vol. II, p. 792, December 6-9, 2004, New Delhi (R. Sreenivas) 173. Computer Aided Engineering of Rotating Machinery, ARAI Symposium on International Technology in association with SAE, January 19-22, 2005. 174. Aerospace Applications of Solid Model Rotor Dynamics, IPROMM 2005, IIT Kharagpur, February 24-25, 2005. 175. Real Time Fault Monitoring, Analysis and Diagnostics to Mitigate Distress Situations, Inaugural Address, International Conference on Emerging Technologies in Intelligent System and Control, Kumaraguru College of Technology, Coimbatore 641 006, 5th January 2005 176. Application of Commercial Structural Codes in Advanced Engineering Analysis, Oil & Gas IQ‟s 4th Global Conference on Rotating Equipment, Shangri-La Hotel, Kuala Lumpur Malaysia, November 29-30 2005 177. Comprehensive Approach in Analytical Design of Advanced Modern Day Machinery, Proceedings of the International Conference On Advances In Structural Dynamics and its Applications, ICASDA- 2005, Gandhi Institute of Technology and Management, Visakhapatnam, December 8 2005 178. Transient Conjugate Heat Transfer Analysis of a Liquid Nitrogen Seal Chamber, ISROMAC 11, February 26 - March 2, 2006, Honolulu, Hawaii USA, (M. Saravanakumar) 179. Determination of A Marine Propeller Thrust using A CFD Code, ISROMAC 11, February 26 - March 2, 2006, Honolulu, Hawaii USA, (M. Saravanakumar)

47 Dr. J.S. Rao

180. Lifing and Condition Assessment of Rotating Machinery, National Workshop on Condition & Residual Life Assessment of Power Plant Equipment, Electrical Research & Development Association, Vadodara, 11 – 12 May 2006 181. Numerical Prediction of Cavitation flow on a Marine Propeller Using a CFD Code, International Conference on Computational , Acoustics, Heat Transfer and Electromagnetics, Visakhapatnam, July 24-25 2006 (M. Saravanakumar) 182. Heat Transfer Studies in Cryogenic Systems with Liquid Oxygen at -150o Celsius, 7th Annual GE Gas Turbine Users Conference, 12th - 13th September 2006, Dubai, UAE (M. Saravanakumar) 183. Numerical Simulation of Seal Flow and Determination of Stiffness and Damping Coefficients, 7th IFToMM-Conference on Rotor Dynamics, Vienna, , 25-28 September 2006 (M Saravanan) 184. Blade Root Shape Optimization, The Future of Gas Turbine Technology, 3rd International Conference, 11-12 October 2006, Brussels – Belgium (S. Suresh) 185. Implementing Effective On-Line Condition Monitoring and Diagnostics to Boost Performance of Turbomachinery and Prevent Catastrophic Failures, The 3rd Annual Conference Rotating Equipment 2006, Oil and Gas IQ, Kula Lumpur, 7-8 November 2006 186. Recent Advances in Rotor Dynamics and Optimization of Rotating Structures, Invited address, Ansys 2006 User‟s conference, Bangalore, November 10, 2006 187. Gear Stress Analysis and Study of Transmission Error, International Conference on Trends in Product Life Cycle, Modeling, Simulation and Synthesis, Bangalore, December 18-20, 2006 (S. Suresh, M. Jaya Kumar, G. Devaradjane) 188. Shape Optimization to improve Life of Bladed Disks in Turbomachinery, Invited address, International Conference on Trends in Product Lifecycle, Modelling, Simulation and Synthesis (PLMSS‟06), December 16-18, 2006, Bangalore 189. Flow Optimization with Conjugate Heat Transfer, G.I. Taylor Memorial Lecture, Proceedings 51st Annual Congress Indian Society of Theoretical and Applied Mechanics, December 18 - 20, 2006 Visakhapatnam, India (M. Saravanakumar, Sunil Kumar) 190. Optimization in Modern Structural, Flow and Conjugate Heat Transfer Engineering Designs, Professor Abid Ali Endowment Lecture, Osmania University, 22nd December 2006 191. Structural & Flow – Thermal Optimization, Indo Nafems National Conference,12th January 2007 192. External Aerodynamic Flow for High Speed Passenger Car, Symposium on International Automotive Technology: SIAT2007, SAE Paper No. 2007-26-050, 17-20 Jan 2007, ARAI, Pune, India, (M.Saravanakumar, D.C. Vijay chandar) 193. Optimization of Aircraft Structures and Rotating Machinery, AeroIndia 2007, Feb 5-11, 2007, Bangalore 194. CFD Practiced in Mechanical Engineering, AICTE Seminar on Application of CFD in Mechanical Engineering, NMIT, Yelahanka, March 5, 2007 195. Recent Advances in Aero-Acoustics Problems, Dreams 2007, John F. Welch Technology Centre, Bangalore, 12th March 2007, (M. Saravana and Ashish Singh) 196. Flow Optimization with Conjugate Heat Transfer, Altair 3rd India/S.Asia CAE Users conference 2007, August 9-11, 2007 197. Future Directions of Virtual Prototyping & Validation (CAE), Confederation of Indian Industry Seminar on NEW PRODUCT DEVELOPMENT TOOLS, CAD-CAM-RP-CAE, 29-30 August 2007, New Delhi

48 Dr. J.S. Rao

198. Modern Design Aspects and Multidisciplinary Optimization, Multidisciplinary Design Optimization for Aerospace Systems, Continuing Education Program, 17-21 September 2007, Aeronautical Development Establishment, Bangalore 199. Simulation, The Past, The Present and the Future, International Conference & Exhibition on Total Engineering, Analysis & Manufacturing Technologies, Team Tech 2007, 4-6 October 2007 200. Automotive Driveline Simulation, Invited address, International Conference on CAE, IIT, Madras, 13-15 December 2007, (Vasanthakumar Mahadevappa, Partha Dey, Baddam Rajeshwar and Kumar Hebbale) 201. History of Rotating Machines, IFToMM Workshop on the History of Machines and Mechanisms, HMM 2007, Bangalore, December 14, 2007 202. Estimation of Dynamic Stresses in Last Stage Steam Turbine Blades under Reverse Flow Conditions, (K. Ch. Peraiah, Uday Kumar Singh), VETOMAC – IV, Hyderabad, 17-19 December 2007 203. Overturning Stability Analysis of Three Wheeled Motorized Vehicles using Simulink, (Partha Dey, Baddam Rajeshwar), VETOMAC – IV, Hyderabad, 17-19 December 2007 204. Torsional Dynamics of Discrete Systems through Simulink, (Partha Dey, Baddam Rajeshwar), VETOMAC – IV, Hyderabad, 17-19 December 2007 205. Engineering Mechanical Vibrations in 20th Century, Plenary Talk, VETOMAC – IV, Hyderabad, 17-19 December 2007 206. Modern Design Practices and Optimization in Aerospace Industry, Invited Lecture, International Conference on Advances in Machine Design and Industry Automation, ICAMDIA – 2007, January 10- 12, 2007, Pune 207. Recent Advances in Optimization of Aerospace Structures and Engines, ICOVP-2007 - India: 8th International Conference on Vibration Problems: Shibpur, India. January 30-February 3, 2007 208. Globally Elastic and Locally Plastic Structures Optimization and Lifing, at International Conference on Multiscale Modeling and Simulation, ICMMS‟08, 2–4 January 2008 Bangalore 209. Numerical Analysis of Sunroof Buffeting, 5th International Mobility Conference on Emerging Automotive Technologies Global and Indian Perspective, SAE Number 2008-28-0059, New Delhi 9-11 January 2008 (M. Saravana Kumar and Ashish Singh) 210. Weight Optimization of Turbine Blades, The 12th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, Hawaii, February 17-22, 2008, ISROMAC12-2008-20020 (Ch. Bhaskar Kishore, Vasanthakumar Mahadevappa) 211. Numerical Simulation of the Flow in a Two Stage Turbine driving a Liquid Oxygen Pump, The 12th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, Hawaii, February 17-22, 2008, ISROMAC12-2008-20111 (M. Saravana Kumar) 212. Lifing of Mechanical Components with particular reference to Turbine Blading, NAFEMS - INDIA Workshop on Finite Element Methods and Practical Stress Analysis, The Aeronautical Society of India Bangalore, 8 & 9 February 2008 213. Lifing of Turbomachinery Blades – A Process Driven Approach, GT2008-50231, ASME Turbo Expo 2008, June 9-13, 2008 Berlin, Germany (R. Narayan, M. C. Ranjith) 214. Rotor Dynamics of Aircraft Gas Turbine Engines, International Conference Aerospace Science & Technology, INCAST 26-28 June 2008, Bangalore 215. Mechanical Design for Optimized Life Through Simulation, 11th APJ CAE Symposium, Hewlett- Packard Company Bangalore, 22 July 2008

49 Dr. J.S. Rao

216. Blade Lifing – A Comprehensive and Process Driven Approach, Proceedings of the Altair India/S.Asia HTC2008 (HyperWorks Technology Conference), 1-2 August 2008 (R. Narayan, M. C. Ranjith) 217. Topology Optimization of Aircraft Wing, Proceedings of the Altair India/S.Asia HTC2008 (HyperWorks Technology Conference), 1-2 August 2008 (Satish Chandra, Madhusudan A. Padmanahan, Kamesh, J. V. and Kiran S) 218. Back to Basic Sciences from Engineering Disciplines, Seminar on Creating Knowledge Power in the World of Learning, Delhi College of Engineering, August 25-26, 2008 219. Blade Lifing with Material and Friction Damping, The Future of Gas Turbine Technology, 4th International Conference, 15-16 October 2008, Brussels, Belgium, (R. Narayan, M. C. Ranjith, R. Rejin) 220. Computation of Resonant Stresses and Lifing with Analytically Determined Nonlinear Material and Friction Damping in Structures, Proceedings of International Conference on Computational Methods in Engineering. & Sciences, Chaitanya Bharathi, Hyderabad, 8-9 January 2009, p. 33 221. Sustainable Energy for Earth – Can We Bring Sun to Earth? National Conference on Sustainable and Social Comfort – Strategizing Design and Manufacturing, VNR Vignana Jyothi Institute of Engineering & Technology, Hyderabad, 19th January 2009 222. Numerical Simulation of Turbocharger Radial Compressor, 2nd National Conference on: CFD Applications in Power and Industry Sectors, 28th - 29th January 2009, Hyderabad, India (M. Saravana) 223. Lifing of Automobile Structures and Drive Trains in Frequency Domain, 2009 GAMC Automotive Symposium, February 4-5, 2009, Bombay, India (Narayan Rangarajan) 224. Total Powertrain System Optimization, 2009 GAMC Automotive Symposium, February 4-5, 2009, Bombay, India 225. Concept Design of Composite Aircraft Wing, International Seminar Aero India 2009, 11 February 2009 (S. Kiran and Venkat Reddy), 226. Optimized Life using Frequency and Time domain approaches, IUTAM Symposium on Rotor Dynamics, Springer Proceedings in Physics, New Delhi, March 23-26, 2009 227. Vibrations in Rotating Machinery – Historical Development, AICTE Faculty Development Program, M V G R College of Engineering, Vizianagaram, 30 May 2009 228. A Procedure to Predict Influence of Acceleration and Damping of Blades Passing Through Critical Speeds on Fatigue Life, Proceedings of ASME Turbo Expo 2009: Power for Land, Sea and Air, GT2009- 59433 June 8-12, 2009, Orlando, Florida, USA, (Rejin Ratnakar, S. Suresh, R. Narayan) 229. Environment Protected Sustainable Energy – Is Bringing Sun to Earth the Answer?, ENVIROENERGY 2009 Chandigarh March 19-21 2009 230. Fatigue Life Estimation of Turbomachinery Blades, Plenary Talk, VETOMAC-V, Wuhan, 26-28 August 2009 231. Optimization for Aerospace Applications using HyperWorks, Structure and the first multi- disciplinary seminar on Optimization Theory and Applications Dalian, China, 3-4 September 2009 232. Turbine Blade Vibrations and Life – Historical Development, Presidential Address, IFToMM International Symposium Dynamics of Steam and Gas Turbines, Posejdon, Gdansk, Poland 1-3 December 2009 233. Recent Advances in Lifing and Optimization of Rotating Machinery, Invited Lecture 14th National Conference on Machines and Mechanisms (NaCoMM-09), December 17-18, 2009, National Institute of Technology Durgapur 234. Leveraging CAE to improve Pedagogy - HyperWorks in NextGen Designs, HTC 2010, Bangalore 4- 5 August 2010

50 Dr. J.S. Rao

235. Unsteady Pressures in Flow Interference of Turbomachines, 12th Annual CFD Symposium, 11th ‐12th August 2010, IISc Bangalore (Hari Sankar) 236. Magneto Hydro Dynamics in Fusion Reactors, 12th Annual CFD Symposium, 11th ‐12th August 2010, IISc Bangalore 237. Condition Monitoring System, Proceedings of the 8th IFToMM International Conference on Rotordynamics, September 12-15, 2010, KIST, Seoul, Korea (KJVPR Swaroop, Narayan Rangarajan, Shashi Mantrawadi) 238. Use of Metamodels in Crash Optimization, Global Power Train Conference, Munich, September 22- 23, 2010 (K. Bigil Kumar) 239. External Flow Simulation with Open Sun Roof and Optimization for Reduced Noise to Passengers, Global Power Train Conference, Munich, September 22-23, 2010 (Ashish Singh) 240. Analytical Estimation Of Microslip Damping In Bladed-Disks, The Future of Gas Turbine Technology, 5th International Conference, 27-28 October 2010, Brussels, Belgium, (R. Narayan and Rejin Ratnakar) 241. Concept Design of Composite Aircraft Wing, Proceedings of the ASME 2010 International Mechanical Engineering Congress & Exposition, IMECE2010-37206, November 12-18, 2010, Vancouver, British Columbia, Canada (S. Kiran) 242. Product Design, Challenges and Opportunities, GE Healthcare Annual Technology Symposium, 24 November 2010, Bangalore 243. Comprehensive Turbomachine Blade Lifing using Unsteady Pressures and Nonlinear Damping, VETOMAC-VI, New Delhi, 16-17 December 2010 244. Leveraging CAE in Pedagogy of Dynamics, Inaugural Lecture, International Conference on Multi Body Dynamics, Vijayawada, 24 February 2011 245. Evolution of Rotor Dynamics in 20th Century, 13th World Congress in Mechanism and Machine Science, Guanajuato, México, 19-25 June, 2011, A17-600 246. Optimization for Design - Composite Aircraft Structures, Fourth International Conference on Structural Stability and Dynamics, 4-6th January 2012, Malaviya National Institute of Technology, Jaipur 247. What is involved in Bird Strike and Rotor Dynamic Analysis, The Seventh International Conference on Vibration Engineering and Technology of Machinery (VETOMAC-VII), November 21-24, 2011, Shanghai Jiao Tong University China 248. Life Calculation of First Stage Compressor Blade of a Trainer Aircraft, ASME Turbo Expo 2012, June 11-15, 2012 Copenhagen, Denmark, GT2012-68070 (Narayan Rangarajan, Rejin Ratnakar, R. Rzadkowski, M. Soliński) 249. Theory of Machines - Leveraging HyperWorks MBD, HTC 2012, Royal Gardenia, Bangalore, 17 July 2012 250. Flow Induced Vibrations and Flutter, Unsteady Phenomena in Turbomachinery and Combustion Systems Seminar, M. S. Ramaiah School of Advanced Studies, Bangalore, 20 July 2012 251. Solid Rotor Models and Gyroscopic Effects, to be presented at 8th International Conference on Vibration Engineering and Technology of Machinery, 3-6 September 2012, Gdansk, Poland. 252. 3D Blade Root Shape Optimization, 10th International Conference Vibrations in Rotating Machinery, Institution of Mechanical Engineers (London), C1326-045, 11-13 September, London (Bigil Kumar) 253. Shape Optimization of Blade Roots for Life Enhancement, 17th Blade Mechanics Seminar, ZHAW Universities of Applied Sciences, Winterthur, Switzerland, 12 September 2012

51 Dr. J.S. Rao

254. Optimization and Analysis Unified, 57th Congress of Indian Society of Theoretical and Applied Mechanics, 16-18 December 2012, Pune 255. Three-Dimensional Shape Optimization through Design of Experiments and Meta Models in Crash Analysis of Automobiles, SIAT-2013, Pune 9-12 January 2013 (Bigil Kumar) 256. Performance Analysis of Winglets Using CFD Simulation, 2013 India Altair Technology Conference, Pune, 18 July 2013 (Dinesh, M, Premkumar P. S. and Senthilkumar, C.) 257. Calculus of Variations in Design and Topology Optimization, The Chinese Congress of Theoretical and Applied Mechanics, to be presented 19-21 August, Xian, China (C. W. Lim and Jiyuan Ye) 258. Optimization of Fan Blades, The Ninth International Conference on Vibration Engineering and Technology of Machinery, VETOMAC-IX, 21-23 August, 2013, Nanjing, China 259. Gear Tooth Stresses from Finite Element Analysis Compared with AGMA Standards, Proceedings of the ASME 2013 International Design Engineering Technical Conferences & Power Transmission and Gearing Conference, IDETC/PTG 2013, August 4-7, 2013, Portland, Oregon, USA, DETC2013-12037 260. Significance of Damping and its Simulation in Fatigue Damage, Proceedings of the ASME 2013 International Mechanical Engineering Congress & Exposition, IMECE2013, November 13-21, 2013, San Diego, California, USA, IMECE2013-66193 261. Hindu Temple Carts – Rathams, IFToMM Workshop on History of MMS – Palermo 2013, (Babaji Rajah Bhonsle, Bigil Kumar) 262. Crack Propagation Life Calculation Of An Aircraft Compressor Blade Due To Bird Injestion, Proceedings of the ASME Turbo Expo 2014, June 16-20, Dusseldorf, Germany, GT2014-25010, (R. Rzadkowski) 263. Rotor Dynamics In Design Of A High Speed Cryogenic Pump For Geo Stationary Launch Vehicles, ASME 2014 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, IDETC/CIE 2014, August 17-20, 2014, Buffalo, NY, USA, DETC2014-34580 264. Rotor Dynamics of Synchronous Generators, 9th IFToMM International Conference on Rotor Dynamics, Milan (Italy) September 22-24, 2014, (D. Srinivas, G. Vijendra, K. Prachi) 265. Ancient Temple Carts – Modifications for Structure and Steering, 10th International Conference on Vibration Engineering & Technology of Machinery, September 9-11, 2014, University of Manchester, UK, (Bigil Kumar) 266. Theory of Machines through 20th Century, Special issue of Mechanism and Machine Theory to celebrate the 100th birthday of F.R. Erskine Crossley, 2015 267. Origin of Temple carts and Structural Analysis, 3rd World Conference on Applied Sciences, Engineering and Technology, (WCSET 2014), Kathmandu, Nepal, 27-29 September 2014 268. 100th Birthday of Professor Crossley, Association of Mechanisms and Machines Newsletter, January 2015. 269. Modern India Temple of Learning at IIT Kharagpur, Yearnings of Yore, IIT Kharagpur Students‟ Alumni Publication, January 2015 270. Flutter of Aircraft Wing, ICVE 2015, September 18-20, 2015, Shanghai, China, (Tharikaa R. K., Shivakumar, P.) 271. Science to Engineering Approach in Engineering Education, 14th World Congress in Mechanism and Machine Science, Taipei, Taiwan, 25-30 October, 2015 272. Gravitational Waves and their Influence on Earth, National Conference on Communication, Information and Telematics (CITEL 2016), Coimbatore, 30-31 March 2016

52 Dr. J.S. Rao

273. Recent Discovery of Gravitational Waves and their influence on the Earth, 3rd International conference on Current Trends in Engineering and Technology (ICCTET-3) Akshaya college of Engineering and Technology, 6th April 2016. 274. Gravitational Waves and their Effect on Earth‟s Temperature, NAFEMS India Conference, August 29-31, Bangalore (P. Shiva Kumar) 275. Gravitational Waves and Engineering Aspects of Thermal And Earth Quakes of Earth, VETOMAC XII International Conference on Vibration Engineering and Technology of Machinery, Warsaw, Poland, September 2016, Proceedings of The Twelve International Conference on Vibration Engineering and Technology of Machinery, (VETOMAC-XII), Warsaw, Jablonna Palace, Poland, 7-9 (Wednesday – Friday) September, 2016 276. Pangaea and Gravitational Waves, Hutton India Conference 2016, Badruka College, Kachiguda, Hyderabad, 27 November 2016 277. Engineering Consequences of Recent Discovery of Gravitational Waves, Honorable Speaker, 2nd World Bio Summit & Expo, October 10-12, 2016, Dubai. 278. Asset Management through Life Estimation, Keynote address

16. CONTRIBUTIONS AS SCIENCE COUNSELOR

The Indo-US Sub-commission on Science and Technology was established in 1973. Over the years it has grown into a major bi-national program in the world. Initially the activities began with Agriculture, then Health Sciences and continued into the areas of Physical and Chemical Sciences, Environment and Ecology, Energy and other Engineering areas. Science and Technology Initiative were taken by Mrs. Gandhi and President Reagan in 1983 to consolidate these programs. Vaccine Action Program was established in 1987. Agency for International Development has established recently two other major programs, viz., Project for the Advancement of Commercial Technology (PACT) and Project for Acceleration of Commercial Energy Research (PACER). In developing these programs and continuing the ongoing programs good working relations and close contacts are established with various US Agencies such as White House Office of Science & Technology Policy, National Science Foundation, National Academy of Sciences, Department of Agriculture, Department of Energy, Agency for International Development, National Institute of Health, Institute of Medicine, National Academy of Engineering, National Technical Information Services, American Association for the Advancement of Science etc. To day the total commitment of both US and India is over 200 million $ spanned over nearly 250 projects for a three year period. A new program Ronald Reagan - Rajiv Gandhi Fellowship Exchange Program has just been announced.

In the area of Biotechnology, a Standing Advisory Committee consisting of Non Resident Indian Scientists was established to help the Biotechnology activities in India. Biotechnology Associate-ships have been introduced for special training at the US Universities and Laboratories. Workshops have been coordinated in India in this field. An Industry workshop under the PACT program has been conducted in US with Indian and US industries participating to develop joint ventures. Participating in the Panel of Scientific Advisers of the International Center of Genetic Engineering and Biotechnology, played a key role in the identification and selection of Director of the Center and Head of the Delhi Component and also in identifying areas of work to be concentrated at both the Trieste and Delhi components.

53 Dr. J.S. Rao

Played a key role in the arrangements for the visits of the Prime Minister and Ministers of State for Science and Technology e.g., in arranging four different meetings with US Scientists to meet the PM in 1985. Arising out of these meetings with Non Resident Scientists, Joint Scientific Groups of Indian Scientists in US and India were established in Microelectronics and Aeronautics. Such groups in Biotechnology, Computers and Materials are being established. These groups are playing a Key role in India, e.g., in Microelectronics, they are helping in identifying short and long term projects and goals in the process of electronification of India. Arising out of the activities with Indian Scientists in USA, a large number of export oriented US industries are set up in India, e.g., Texas Instruments, Commodore Computers, Data General, Indus Technologies etc. A data base of important Indian Scientists has been established.

Another significant activity has been in the area of Energy, both conventional & non-conventional areas. Information on clean coal technologies and efficient combustion procedures with fluidized and circulating beds and combined cycle power generation using coal gasification, magneto hydrodynamics etc. has been collected through various visits to develop programs with India. Projects on Power plant Rotating machinery dynamics are being developed with six different US universities and Indian Institutions. In the area of non-conventional energy, collaborative ventures between Luz International and Punjab Agro Industries have been developed for Solar Thermal Power Systems. Collaborative programs in Amorphous Silicon, Ocean Thermal Energy Conversion and other areas are under development.

A very highly successful Science Exhibition has been organized in US. The exhibit was opened in 1985 in Chicago and it toured to Los Angeles, Portland, Seattle, Charlotte and Boston. A significant portion of this exhibit is retained in US with the American Association of Science Centers for touring at various places for another two years. This exhibit has projected a very visible and vibrant image of Science in India to the US public in general. It continues to be very popular. Several conferences and Seminars were organized to highlight the recent progresses in various aspects of Science & Technology and the resultant impact on the improvement of quality of life in India. The interaction between the US and Indian museum scientific personnel has helped a lot in the Science museum activity in India and also in the development of new programs of Popularization of Science. Several new projects are developed or under development in various fields. In Agriculture, the thrust is on Biological Nitrogen Fixation, a new workshop is being organized to enlarge the present programs under the Science and Technology Initiative. In health area, the major development is in the vaccine field using recombinant DNA. Continuing Medical Education programs are established between the American Association of Physicians of Indian Origin and Medical Council of India. Through the generous help of University of California, Berkeley, Elite School of Optometry was set up at the Madras Research Foundation and medical equipment continues to be donated by such groups to Indian Hospitals for carrying out advanced research and health care. Several Institutional Collaborations are being established, e.g., University of Pittsburgh and Osmania University, University of Illinois and ICMR, Universities of Wisconsin State and Pushkar Valley Project on Environment etc. Programs of interaction of Indian Scientists of Association of Scientists of Indian Origin in America are being developed with several Indian Universities for exchange visits. Cooperation is also extended to the Council of Scientific and Industrial Research in identifying personnel for the Transfer of Knowledge through Expatriate Nationals Program under UN, to visit India. Another major activity has been to help Indian Scientists and Students who wish to return to India in finding the Pool positions of CSIR and appropriate jobs.

54 Dr. J.S. Rao