RICHARD C. EHRGOTT, PHD 810 Old Topanga Canyon Road Topanga, CA 90290 Home: 310.455.8609 [email protected] Cell: 818.795.9413

PROFILE

Accomplished Engineer, Teacher and Consultant with expertise in structural and dynamic analysis, finite element methods and classical theoretical modeling. Applied engineering experience includes rocket engine hardware, space electronic equipment, aircraft avionics, aircraft and various mechanical systems. Knowledgeable in experimental methods and vibration qualification testing. Excellent communication skills with ability to present complex information clearly. Analytic and strategic thinker able to determine the quickest path to obtain desired results.

Proficient with Finite Element Analysis Software tools: ANSYS, NASTRAN, ABAQUS, I-DEAS, FEMAP

EDUCATION

. PhD, Engineering, Major: Civil Engineering / Applied Mechanics / Structural Dynamics, Minor: Applied Mathematics / Numerical Analysis / Finite Element Analysis, University of Southern California, 1992 . MS, Engineering, California State University, Northridge, CA . BS, Engineering, California State University, Northridge, CA

RELEVANT EXPERIENCE

SOLAR RESERVE, Santa Monica, CA 2013 – Present Structural Consultant . Performed finite element analysis (ANSYS) to evaluate the stress, deflection, stability and fatigue life of innovative heliostats used in concentrated solar power plants. Analysis included components such as the heliostat structure, drives, facets and foundations. Developed software to perform preliminary heliostat foundation design to minimize mirror slope error. Developed software to simulate wind loading on heliostats used to evaluate fatigue and the dynamic optical error of the mirrors. Two patents pending for facet designs. . Performed life analysis on solar plant receiver components subjected to high temperature solar flux.

PRATT AND WHITNEY, Canoga Park, CA 2005 – 2010 Structural Engineer, Rocketdyne J-2X Rocket Engine for the Constellation Project . Created finite element models (ANSYS) of metallic and composite rocket engine components used to develop system level dynamic loads. . Performed structural and dynamic analysis on the J-2X Electronic Control Unit. Evaluated survivability of electronic components on composite circuit cards to flight and qualification vibration loading. . Supported Advanced Programs and Research involving damping of Composite Honeycomb Panels.

BOEING, Canoga Park, CA 1999 – 2005 Structural Engineer, Rocketdyne 2003 – 2005 Advanced Tactical Laser (ATL) aircraft . Lead structural dynamist solving stress and dynamics issues related to installing high energy chemical laser equipment on a modified C-130H aircraft. . Reviewed optical isolator design and simulated response of an isolated composite laser bench and optics to flight vibration excitation (uncorrelated random measured in aircraft flight testing). . Performed nonlinear structural analysis at the C-130H floor tie-down locations to evaluate crash conditions on chemical equipment. The system was successfully flight tested in 2009. RICHARD EHRGOTT, PH.D. PAGE TWO

Structural Engineer 1999 – 2003 International Space Station's Electrical Power System (EPS) . Conducted dynamic analysis, vibration qualification testing for the majority of the Orbital Replacement Units, supplying power and control to the International Space Station. . Coordinated failure investigations with NASA and other contractors. Resolved difficult technical thermal, stress and dynamic issues to meet Space Shuttle launch schedules.

POSEY COMPANY, Arcadia, CA 2008 – 2009 Stress Consultant . Performed finite element analysis to evaluate the stress, deflection and fatigue life of articulating hospital beds.

JOHN A. MARTIN AND ASSOCIATES, Los Angeles, CA 1996 Vibration Consultant . Performed experimental vibration survey of the San Diego Conference Center.

ANSWER PRODUCT, Los Angeles, CA 1996 Stress Consultant . Performed Finite Element analysis of bicycle components

INSTRUMENTATION AND MEASUREMENT CORP., Westlake, CA 1996 Vibration Consultant . Conducted an experimental evaluation of a prototype capacitance type micro-machined accelerometer.

FALCONBRIDGE, Ontario, Canada 1995 Stress Consultant . Thermal and stress Finite Element analysis (I-DEAS) of metal producing furnace components.

JOHN A. MARTIN AND ASSOCIATES, Los Angeles, CA 1995 Vibration Consultant . Performed seismic study of the Olive View Hospital using ETABS 6.0 Finite Element code.

HARMAN / JBL CONSUMER GROUP, Northridge, CA 1995 Vibration Consultant . Developed an experimental methodology for shock testing of speakers. Performed Finite Element analysis of critical speaker components.

NICHOLSON MANUFACTURING COMPANY, Seattle, WA 1993 – 1994 Stress Consultant . Performed stress and stability analysis using Finite Element (I-DEAS) and classical methods on the Docksider, a large articulated arm used for unloading ships.

BOEING COMPANY, Seattle, WA 1992 – 1993 Contract Stress Engineer . Stress Analyst for the 777 aircraft tool design group. Performed Finite Element stress and stability analysis using I-DEAS and ANSYS programs. Supported design of handling equipment, scaffolding, overhead equipment, transportation fixtures and all the aircraft support structures used in the automated final body join. . Wrote the Boeing stress manual "Stress Analysis in Tool Engineering." . Taught Finite Element course using I-DEAS. RICHARD EHRGOTT, PH.D. PAGE THREE

GREGORY GREEN ASSOCIATES, London, England 1989 Finance Consultant . Developed and evaluated numerical optimization codes for application in solving the Maximum Entropy problem.

PEARCE STRUCTURES, Chatsworth, CA 1988 – 1989 Stress Consultant . Involved in the analysis and design of large space frame systems for the BIOSPHERE II project. Static, seismic, wind and thermal analysis was performed using Finite Elements methods.

ROCKWELL INTERNATIONAL CORPORATION, Canoga Park, CA 1981 – 1987 Mechanical Engineer . Performed structural dynamic analysis of the Space Shuttle Main Engine components using Finite Element methods involving random, shock, and frequency response. Correlated results with engine test data and laboratory vibration tests. Interfaced with design and development units evaluating design changes and making design revision recommendations.

IMAGE SCIENCES INC., Sepulveda, CA 1985 – 1986 Vibration Stability Consultant . Analyzed vibration problems on high speed motion picture cameras using nonlinear computer simulation to test corrective measures.

TEACHING EXPERIENCE

CALIFORNIA STATE UNIVERSITY, Northridge, CA 1988 – 2015 Professor, Civil, Industrial and Applied Mechanics Department 1996 – Present Associate Professor 1988 – 1996 . Full-time faculty member. Teaching the following graduate and undergraduate courses  AM 542 Finite Elements  AM 521 Aircraft Structures  AM 410 Vibrations  CE 536 Structural Dynamics  CE 435 Structures  AM 316 Dynamics  CE 439 Steel Design  AM 317 Mechanics Laboratory  AM 340 Adv. Strength of Materials  C 100 Intro. to Computers  AM 510 Advanced Vibrations  CE 436 Advanced Structures

STELLENBOSCH UNIVERSITY, Stellenbosch, South Africa 2011 Visiting Professor, Department of Mechanical and Mechatronic Engineering . Teaching Finite Element and Advanced Vibrations courses and participating in research activities.

NAVAL WEAPONS CENTER, China Lake, CA 1991 Consultant . Taught Structural Dynamics and Aircraft Structures courses.

EGYPTIAN AIR FORCE ACADEMY, Cairo, Egypt 1987 – 1988 Educational Specialist, Modernization Program . Duties involved teaching; writing of educational material; evaluation and implementation of Computer Aided Instructional software. Created experiments, purchased equipment for the Materials, Strength of Materials and Aircraft Structures laboratories. RICHARD EHRGOTT, PH.D. PAGE FOUR

RECENT PUBLICATIONS

1. Ehrgott, R., Panossian, H., Davis, G., “Modeling Techniques For Evaluating The Effectiveness Of Particle Damping In Turbomachinery” Presented at the 50th American Institute of Aeronautics and Astronautics (AIAA) - Structures, Structural Dynamics, and Materials Conference, Palm Springs, California, May 4-7, 2009

2. Panossian, H., Ehrgott, R., “Non-Obstructive Particle Damping (NOPD) Treatment Optimization for Composite Honeycomb Panels.” Presented at the 48th American Institute of Aeronautics and Astronautics (AIAA) - Structures, Structural Dynamics, and Materials Conference, Waikiki, Hawaii, April 23-26, 2007.

3. Ehrgott, R., Panossian, H., Davis, G., “Particle Damping in Turbomachinery,” Presented at the PWR Technical Excellence Conference Canoga Park, California, September 14th, 2006

4. Bavarian, B., et al., "External Support of Concrete Structures Using Composite Materials." Presented at the First International Conference on Composites in Infrastructure, Tucson, Arizona, January 15- 17, 1996

5. Masri, S.F., Ehrgott, R.C., Kumar, R. 1995 "Modeling and Control of an Electrorheological Device for Structural Control Applications." Journal of Smart Materials and Structures, Institute of Physics UK, vol.4, suppl., no.1A

6. Ehrgott, R.C., Masri, S.F., "Structural Control Applications of an Electrorheological Device." Proceedings of the First World Conference on Structural Control. Los Angeles, California, August 3-5, 1994. Member of the organizing committee.

7. Ehrgott, R.C., Masri, S.F., 1994. "Experimental Characterization of an Electrorheological Material Subjected to Oscillatory Shear Strains." Trans. ASME, Journal of Vibration and Acoustics.

8. Ehrgott, R.C., Masri, S.F., "Applications of ER Materials in Smart Structures." Presented at the First International Conference on Smart Structures, San Diego Calif., March, 1993.

9. Ehrgott, R.C., Masri, S.F., 1992. "Modeling the Oscillatory Dynamic Behavior of Electrorheological Materials." Journal of Smart Materials and Structures, Institute of Physics, UK,1 275-285.

10. Ehrgott, R.C., Masri, S.F., "Studies of a Controllable Electrorheological Vibration Damper." Presented at the First International Conference on Motion and Vibration Control. Yokohama, Japan, 1, 356-361, Sept. 7-11, 1992. Chaired working group.

11. Ehrgott, R.C., Masri, S.F., "Use of ER Materials in Intelligent Systems." Presented at the U.S.-Italy- Japan Workshop on Structural Control and Intelligent Systems. Sorrento, Italy, July 12-15, 1992.