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Proceedings Paper

Passive-only wave-based structural health monitoring from ambient noise
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Paper Abstract

It has recently been demonstrated theoretically and experimentally that Green's functions (impulse responses) can be estimated from coherent processing of random vibrations using only passive sensors studies in various applications (ultrasonics, acoustic, seismic...). This article investigates the passive-only estimation of coherent guided waves waves (DC-500 kHz) in an aluminum plate of thickness comparable to aircraft fuselage and wing panels. Furthermore these passively reconstructed waveforms can also be used for damage detection in the plate similarly to conventional active testing. Based on this study, passive structural health monitoring techniques for aircraft panels can be developed using random vibrations.

Paper Details

Date Published: 10 April 2008
PDF: 7 pages
Proc. SPIE 6935, Health Monitoring of Structural and Biological Systems 2008, 693508 (10 April 2008); doi: 10.1117/12.775636
Show Author Affiliations
Karim G. Sabra, Georgia Institute of Technology (United States)
Adelaide Duroux, Georgia Institute of Technology (United States)
Ankit Srivastava, Univ. of California, San Diego (United States)
Francesco Lanza di Scalea, Univ. of California, San Diego (United States)
Ivan Bartoli, Univ. of California, San Diego (United States)


Published in SPIE Proceedings Vol. 6935:
Health Monitoring of Structural and Biological Systems 2008
Tribikram Kundu, Editor(s)

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