Exploring and manipulating guided wave features for structural health monitoring

Yanfeng Shen

doi:10.1117/12.2614680

19 April 2022 Exploring and manipulating guided wave features for structural health monitoring

Yanfeng Shen

Proceedings Volume 12048, Health Monitoring of Structural and Biological Systems XVI; 1204803 (2022) https://doi.org/10.1117/12.2614680
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

Ultrasonic guided waves have been investigated as a class of powerful tool for Structural Health Monitoring (SHM) and Nondestructive Evaluation (NDE). The key towards a highly sensitive structural sensing system resides in whether it can take full advantage of the favorable features of the interrogative wavefield. This paper reports recent research progress in SHM and wave mechanics from Active Materials and Intelligent Structures (AMIS) Lab at Shanghai Jiao Tong University. It addresses two major aspects in this regard: (1) effective and efficient methodology of exploring guided wave characteristics for damage detection and quantification; (2) recent progress on manipulating guided waves for enhanced SHM/NDE performance. In particular, the first aspect presents efficient modeling strategies for understanding linear and nonlinear guided wave signatures, including semi-analytical finite element method, local interaction simulation approach, and small-size regional numerical models. Examples of fatigue crack evaluation will be demonstrated with the extracted guided wave information in both linear and nonlinear regions. The second aspect puts forward the concept of engaging elastic metamaterials for inspection wave field control. It will demonstrate four different wave manipulation case studies: frequency component filtering, selective wave mode transmission, complete mode conversion, as well as tunable wave control with active elastic metamaterials. The paper finishes with summary, concluding remarks, and suggestions for future work.

Conference Presentation

Citation Download Citation

Yanfeng Shen "Exploring and manipulating guided wave features for structural health monitoring", Proc. SPIE 12048, Health Monitoring of Structural and Biological Systems XVI, 1204803 (19 April 2022); https://doi.org/10.1117/12.2614680

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