题目：Ultrasonics in SHM/NDE: Sparse Arrays to Lasers
报告人：Prof. Michael Todd（Professor in the Department of Structural Engineering at the University of California San Diego）
时间：2017年11月06日（周一）上午9:30
地点：明故宫校区18号楼529会议室
主办单位：机械结构力学及控制国家重点实验室、国际合作处、科协、航空宇航学院
报告简介：
The use of ultrasonic energy for nondestructive evaluation and structural health monitoring (SHM) applications is unquestionably one of the most active research and development areas within the diverse field. Ultrasonic waves propagate as either bulk or guided waves through structures and scatter off of targeted defects, and their use in bulk energy or selected modes for specificity and localization is a very active endeavor. In SHM applications, guided mode approaches have dominated the work, with various sensor array architectures determining the specific implementation. This work reviews work performed by the UC San Diego-Los Alamos National Laboratory Engineering Institute across the implementation spectrum, ranging from sparse array architectures (array elements spaced significantly greater than interrogation wavelengths) and the associated signal processing for defect detection, localization, and characterization, to full-field non-contact thermo-elastic excitation and response measurement by remote laser. Related applications include optimal sensing and conversion of ultrasonics into audio for human-enabled detection and localization of defects.
报告人简介：
Professor Michael D. Todd received his Ph.D. from Duke University in 1996 and now holds the Professor position in the Department of Structural Engineering at the University of California San Diego. His research interests include structural health monitoring, nonlinear dynamics, vibrations, smart structures, structural dynamics, fiber optic sensors, optimization, uncertainty quantification, stochastic modeling, and haptic sensing. Michael Todd held positions as the Director of SHM Master of Advanced Studies Program, Co-Chair of JSOE School-Wide Initiatives and Faculty Thrusts (SWIFT) Committee, Chair of Department Excellence Faculty Searcy Committee, Chair of Structural Engineering Department Undergraduate Affairs Committee, Chair of UCSD Academic Senate Committee, Vice Chair of Structural Engineering Department and was the member of many committees. Now, he is the member of American Society of Mechanical Engineers, American Society of Civil Engineers, Society of Experimental Mechanics and American Society for Engineering Education. Among his many honors, Todd received the 1999 Alan Berman NRL Publication Award, the 2003 and 2004 NRL Patent Award, the 2005 Structural Health Monitoring Person of the Year award given at the Fifth International Workshop on Structural Health Monitoring, and the 2016 Society of Experimental Mechanics DeMichele Award. He is a 2004-2005 UCSD Hellman Fellow and a 2005 Von Liebig Entrepreneurship award winner. He has published approximately 450 journal papers, conference proceedings, and book chapters, and he holds 4 patents
