Abstracts Review of Progress in Quantitative NDE University of Rhode Island - Kingston (URI) Kingston, Rhode Island July 26 – 31, 2009 Organized by: Center for Nondestructive Evaluation Iowa State University In cooperation with: Air Force Research Laboratories American Society for Nondestructive Testing Ames Laboratory U.S. Department of Energy Army Research Laboratory Federal Aviation Administration National Aeronautics and Space Administration LaRC National Science Foundation Industry/University Cooperative Research Centers The Center for Nondestructive Evaluation is a member of the ISU Institute for Physical Research and Technology. MONDAY Plenary Session 1 – Evolution of QNDE .......................... 1 Plenary Session 2 – QNDE Applied to Ever Changing Societal Needs .............................................................. 1 Session 3 – UT Modeling ................................................. 5 Session 4 – Signal Processing ....................................... 11 Session 5 – Structural Health Monitoring and NDE Reliability ............................................................ 17 Session 6 – NDE for Material Properties ........................ 23 MONDAY AFTERNOON, JULY 27, 2009 This grid is provided for planning purposes. As you go through your abstract book to decide which talks/sessions you would like to attend, you can mark them on this grid for a one shot look at where you would like to go and when on each day of the conference. Session 5 Session 4 Structural Health Session 6 Session 3 Signal Monitoring and NDE for Material UT Modeling Processing NDE Reliability Properties CBLS 010 Chafee 273 CBLS 100 Chafee 277 1:30 PM 1:50 2:10 2:30 2:50 3:10 COFFEE BREAK 3:30 3:50 4:10 4:30 4:50 5:10 5:30 ADJOURN Plenary Sessions 1 and 2 REVIEW OF PROGRESS IN QUANTITATIVE NDE University of Rhode Island (URI) Kingston, Rhode Island July 26 – 31, 2009 PROGRAM Monday, July 27, 2009 PLENARY SESSION 1 EVOLUTION OF QNDE R. B. Thompson, Chairperson CBLS 100 9:00 AM Opening Remarks 9:15 AM Evolution of QNDE's Core Interdisciplinary Science and Engineering Base ---D. O. Thompson, Iowa State University, Center for NDE, 1915 Scholl Road, Ames, IA 50011 10:10 AM Break PLENARY SESSION 2 QNDE APPLIED TO EVER CHANGING SOCIETAL NEEDS D. E. Chimenti, Chairperson CBLS 100 10:30 AM NDE: Surfing the Electromagnetic Spectrum ---H. I. Ringermacher, GE Research Center, KW D254, 1 Research Circle, Schenectady, NY 12309 11:20 AM NDT in Civil Engineering: Experience and Results of the FOR 384 Research Group ---H. Wiggenhauser, BAM, Federal Institute for Materials Research and Testing, Division VIII.2, Non-destructive Damage Assessment and Environmental Measurement Methods, Unter den Eichen 87, D-12205, Berlin, Germany; I. H. W. Reinhardt, Universität Stuttgart, Institut für Werkstoffe im Bauwesen und Otto-Graf-Institut, Pfaffenwaldring 4, 70440 Stuttgart 12:10 PM Lunch Please Note: The bolded authors throughout this program indicate the presenting author. - 1 - MONDAY, PLENARY SESSION 1 Evolution of QNDE's Core Interdisciplinary Science and Engineering Base ---Donald O. Thompson, Iowa State University, Center for NDE, 1915 Scholl Road, Ames, IA 50011 ---Nondestructive testing (NDT) for flaws in materials and structures has undergone an evolutionary change over the past 50 years. In the U.S. it has moved from a testing strategy (nondestructive testing) with a zero defects requirement to a test and evaluate technology (NDE) based upon damage tolerant design considerations. Here it is assumed that the part will always contain defects but those greater than a critical size, specified by fracture mechanics, will be removed by NDE inspection thereby resetting the part’s service clock. In this talk, significant events will be identified that were critical in promoting this paradigm shift. A number of major research programs were initiated to upgrade NDT to meet the new requirements; principal attention in this talk will be given to research highlights initiated in the first of these programs, the DARPA/AFML Interdisciplinary Program for Quantitative Flaw Definition that was established 35 years ago. Its purpose was threefold: to develop a new core science/people base for inspection technology that could meet the new requirements, to set the stage for new field - adaptable engineering tools, and to initiate the current continuing series of QNDE meetings. Advances initiated in this program and pursued by many over the years have resulted in a scientific core structure for QNDE based on a linkage of fundamental models of the various measurement processes that are involved in any inspection and/or technology. These models and their linkage will be discussed and the core structure defined. A new and powerful set of engineering tools - i.e. simulation programs for UT, X-ray, and EC technologies –have also been developed using these models. Applications of these tools will be highlighted and their role in other advanced programs including Structural Health Monitoring and Condition-Based Maintenance will be noted. Finally, a discussion of visions of future opportunities and directions for QNDE will be given. - 2 - MONDAY, PLENARY SESSION 2 NDE: Surfing the Electromagnetic Spectrum ---Harry Ringermacher, Sr. Research Physicist, NTL, GE Research Center, KW D254, 1 Research Circle, Schenectady, NY 12309 ---Advances in Nondestructive Evaluation demand an arsenal of techniques. This was as true twenty years ago as it is today. As materials and their associated technologies progress, so must the strategy for evaluating the quality of the product. Nondestructive Evaluation is a constant struggle to extract, from classical and quantum physics, the quintessential elements that will optimally address an inspection requirement, apart from purely academic interest. It must work to be useful and thereby advance the field. The electromagnetic spectrum, from Röntgen to Maxwell/Hertz, lies at the foundation of both classical and quantum physics. Not only has NDE plucked pearls form every nook of the spectrum ranging from X-rays to T-rays but also has managed to utilize virtually every known coupling of the spectrum to the classical mechanics of heat and sound. I will “surf” the spectrum to provide a sampling of what NDE has extracted past and present as well as try to couple to its future. - 3 - MONDAY, PLENARY SESSION 2 NDT in Civil Engineering: Experience and Results of the FOR 384 Research Group ---Herbert Wiggenhauser, BAM, Federal Institute for Materials Research and Testing, Division VIII.2, Non-destructive Damage Assessment and Environmental Measurement Methods, Unter den Eichen 87, D-12205, Berlin, Germany; I. H. W. Reinhardt, Universität Stuttgart, Institut für Werkstoffe im Bauwesen und Otto-Graf-Institut, Pfaffenwaldring 4, 70440 Stuttgart ---The Research Group FOR 384 was funded by the Deutsche Forschungsgemeinschaft (German Research Foundation) between 2001 and 2007, it evolved from an initiative which started much earlier, in 1994 on a spontaneous basis. The group made an combined effort to research "Non-destructive evaluation of concrete structures using acoustic and electro-magnetic echo-methods". Seven research groups from universities, Fraunhofer Foundation and Material Testing Institutes all over Germany formed this group under the speaker Professor HW Reinhardt (University of Stuttgart). The research focused on ultrasonic echo, impact echo, ground penetrating radar, signal analysis, reconstruction and modeling. Performance demonstrations were also included in the work plan. The lessons learned from the history of this group, their operational phase and in the exploitation of the results are presented and discussed. - 4 - Session 3 Monday, July 27, 2009 SESSION 3 UT MODELING M. Hinders, Chairperson CBLS 010 1:30 PM Modeling Elastodynamic Scattering Using Finite Elements ---A. Velichko and P. D. Wilcox, Department of Mechanical Engineering, University of Bristol, Queen’s Building, University Walk, Bristol, BS8 1TR, United Kingdom 1:50 PM Analytical Model for the Scattering of an Obliquely Incident Plane Shear Wave from a Cylindrical Cavity ---J. C. Aldrin, Computational Tools, Gurnee, IL 60031; M. Blodgett, G. Steffes, and E. A. Lindgren, U.S. Air Force Research Laboratory, Wright Patterson AFB, OH 45433 2:10 PM Ultrasonic Measurement Models, Beam Models, and Flaw Scattering Models for Surface Wave and Plate Wave Inspections ---L. W. Schmerr, Jr., Iowa State University, Center for NDE and Department of Aerospace Engineering, Ames, IA 50011 2:30 PM A 2D Model of Ultrasonic Testing for Cracks Near a Non-Planar Surface ---J. Westlund and A. Boström, Department of Applied Mechanics, Chalmers University of Technology, Goteborg, Sweden 2:50 PM Nonlinear Behavior of Ultrasonic Wave at Crack ---N.-Y. Kim, Department of Mechatronic Engineering, Korea University of Technology and Education, Chunan, South Korea; T.-H. Lee, Graduate School of Hanyang University, Seoul, South Korea; K.-Y. Jhang, School of Mechanical Engineering, Hanyang University, Seoul, South Korea; I.-K. Park, Department of Mechanical Engineering, Seoul National University of Technology, Seoul, South Korea 3:10 PM Break 3:30 PM Modeling of Wave Propagation and Defect Detection in Rectangular Bar Specimens ---M. J. Guers and B. R. Tittmann, The Pennsylvania State University, Department of Engineering Science and Mechanics, 212 Earth Engineering Science Building, University Park, PA 16802 3:50 PM Inhomogeneous Interface Waves in a Thin Layer Between Half Spaces and Their Relationship to