Piezoelectric active sensing using chaotic excitations and state space reconstruction

Timothy R. Fasel; Michael D. Todd; Gyuhae Park

doi:10.1117/12.598924

9 May 2005 Piezoelectric active sensing using chaotic excitations and state space reconstruction

Timothy R. Fasel, Michael D. Todd, Gyuhae Park

Proceedings Volume 5768, Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV; (2005) https://doi.org/10.1117/12.598924
Event: Nondestructive Evaluation for Health Monitoring and Diagnostics, 2005, San Diego, CA, United States

Abstract

Recent research has shown that chaotic structural excitation and state space reconstruction may be used beneficially in structural health monitoring (SHM). The focus of this study is to apply a chaotic waveform to a piezoelectric (PZT) patch that is bonded to a test structure. The use of high frequency chaotic excitation (~80 kHz) combined with PZT active sensing allows the location of incipient damage in the structure to be easily identified. The generation of high frequency chaos from a low frequency process necessitates bandwidth up-conversion that has been shown to be dimension preserving. We investigate the use of this method in conjunction with a novel prediction error algorithm to determine the damage state of a frame structure.

Citation Download Citation

Timothy R. Fasel, Michael D. Todd, and Gyuhae Park "Piezoelectric active sensing using chaotic excitations and state space reconstruction", Proc. SPIE 5768, Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV, (9 May 2005); https://doi.org/10.1117/12.598924

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