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Seminar - Efficient Modeling Strategies for Linear and Nonlinear Ultrasonic Guided Waves in Structural Health Monitoring by Professor Yanfeng Shen
日期:2017 年 05 月 09 日 ( 星期二)
Time:2:00 pm – 3:00 pm
Venue:EF305

Abstract:

This presentation will address the efficient modeling strategies for linear and nonlinear ultrasonic guided waves in Structural Health Monitoring (SHM). It will progressively cover the modeling of wave propagation in simple structures to complex scenarios. Several useful modeling strategies will be presented: (1) analytical modeling and WaveFormRevealer 1-D (WFR-1D); (2) effective non-reflective boundary for Lamb wave simulation in finite element modeling (FEM) tasks; (3) Combined Analytical FEM Approach (CAFA) and WaveFormRevealer 2-D (WFR-2D); (4) GPU-parallelized Local Interaction Simulation Approach (LISA) for waves in complex composite structures; (5) LISA for the simulation of nonlinear interactions between guided waves and fatigue cracks. This talk will finish with conclusion and outlook for future work.

Bio-sketch:

Dr. Yanfeng Shen is a tenure-track Assistant Professor in Mechanical Engineering at the University of Michigan-Shanghai Jiao Tong University Joint Institute. He received his B.Sc. in Engineering Mechanics from Wuhan University, Hubei, China in 2010. He obtained his Ph.D. degree in Mechanical Engineering from University of South Carolina, Columbia, USA in 2014. Thereafter, he was recruited by the University of Michigan as a Postdoctoral Research Fellow in the Department of Aerospace Engineering. In January 2016, Dr. Shen started his tenure-track Assistant Professor position in Mechanical Engineering at the University of Michigan-Shanghai Jiao Tong University Joint Institute. His research interest covers structural health monitoring, guided waves, nonlinear ultrasonics, active materials and smart structures, and advanced computational mechanics. He has been publishing and presenting his work in top tier archival journals and international conferences. Dr. Shen has been actively participating in various professional services as well, such as a reviewer for several high-impact international journals in his field and a member of Nondestructive Structural Monitoring and Diagnosis Technical Committee under ASME.