Impact event identification through real-time strain measurements

M. J. Yang; S. Ahmari

doi:10.1117/12.2044697

8 March 2014 Impact event identification through real-time strain measurements

M. J. Yang, S. Ahmari

Proceedings Volume 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014; 90610B (2014) https://doi.org/10.1117/12.2044697
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

Abstract

Impact event identification is a primary concern in many structural health monitoring applications. Model-based inverse analysis is a common approach for system identification as long as the physical model can accurately capture the behavior of structure. A layered analysis including estimation of impact location (IL) in the first layer and reconstruction of impact load time history (ILTH) in the second layer was proposed. An implementation of the theory on a simply supported plate structure is conducted in this study. The results indicate that the proposed inverse scheme is capable of detecting impact location and reconstructing impact load time history with a satisfactory precision. Due to presence of system error, a suitable cost function has to be chosen to guide the fitting process toward the desired parameters.

Citation Download Citation

M. J. Yang and S. Ahmari "Impact event identification through real-time strain measurements", Proc. SPIE 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014, 90610B (8 March 2014); https://doi.org/10.1117/12.2044697

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