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Proceedings Paper

Piezoelectric active sensing using chaotic excitations and state space reconstruction
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Paper 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.

Paper Details

Date Published: 9 May 2005
PDF: 11 pages
Proc. SPIE 5768, Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV, (9 May 2005); doi: 10.1117/12.598924
Show Author Affiliations
Timothy R. Fasel, Univ. of California/San Diego (United States)
Michael D. Todd, Univ. of California/San Diego (United States)
Gyuhae Park, Los Alamos National Lab. (United States)


Published in SPIE Proceedings Vol. 5768:
Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV
Tribikram Kundu, Editor(s)

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