Recent Developments in Non-Destructive Testing and Structural Health Monitoring Technology

ABSTRACT

This presentation will cover the research carried out by the speaker over the last three decades on structural health monitoring and non-destructive evaluation techniques. In particular, it will focus on acoustic source localization (ASL) and damage detection techniques using linear and nonlinear ultrasonic techniques. Both linear and nonlinear techniques are needed for monitoring damages in materials and structures at different stages of their formation at various scales – from microscopic fatigue cracks and dislocations to large scale cracks in metals, composites and concrete structures. The nonlinear ultrasonic method called Sideband Peak Count-Index (or SPC-I) technique developed by the speaker in collaboration with his colleagues, will be discussed in detail, and advantages of this technique over conventional linear and nonlinear ultrasonic techniques such as ultrasonic pulse velocity, attenuation measurement and higher harmonic techniques will be demonstrated. A new ASL technique that does not require the knowledge of material properties will be also discussed. In addition to the experimental investigation the mesh-free modeling technique called distributed point source method (DPSM) developed by the speaker and his colleagues for solving elastic wave propagation problems will be presented. Advantages of all these newly developed techniques - DPSM, SPC-I and the new ASL technique for nondestructive testing and structural health monitoring applications will be highlighted in this presentation.

BIOGRAPHY

Professor Kundu’s major research area is nondestructive testing and structural health monitoring. On this topic he has published 9 books and 408 technical papers - 221 of those are in peer reviewed scientific journals with close to 10,000 citations according to Google Scholar with an h-index of 52 (Google Scholar), 44 (Scopus) and 39 (Web of Science). He received Humboldt Research Prize (Senior Scientist Award) in 2003 and Humboldt Fellowship award in 1989 and 1996, from Germany. He was also recognized through 2012 NDE Life Time Achievement Award from SPIE (the International Society for Optics and Photonics), 2015 Research Award for Sustained Excellence from ASNT (the American Society for Nondestructive Testing), 2017 Founders Award from Nondestructive evaluation, Diagnostics and Prognostics Division (NDPD) of ASME (the American Society of Mechanical Engineers), 2015 Lifetime Achievement Award and 2008 Person of the Year Award from the Structural Health Monitoring Journal, Satish Dhawan Chair Professorship from the Indian Institute of Science, Bangalore and a number of Invited & Honorary Professorships from France, Germany, Sweden, Switzerland, Spain, Italy, South Korea, Poland, Singapore, India, China and Japan. He is a Fellow or a Distinguished Fellow of six professional societies (ASME, ASCE, SPIE, ASNT, ASA & IIAV) and the Founding Editor-in-Chief of the ASME Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems (JNDE). He has served as an associate editor of four other journals: Ultrasonics, Journal of the Acoustical Society of America, ASME Journal of Pressure Vessels Technology, and Structural Health Monitoring – An International Journal.

Zoom Link: https://stevens.zoom.us/j/91634601626