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Proceedings Paper

Sensor location analysis for nonlinear-acoustics-based damage detection in composite structures
Author(s): Andrzej Klepka; Wieslaw J. Staszewski; Francesco Aymerich; Tadeusz Uhl
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Paper Abstract

This paper investigates the piezo-based nonlinear vibro-acoustic modulation technique for impact damage detection in composite structures. The method is based on combined low-frequency modal excitation and high-frequency ultrasonic excitation that lead to vibro-acoustic modulations in damaged specimens. The work presented focuses on sensor location analysis. Low-profile, surface bonded piezoceramic transducers are used for ultrasonic and modal excitation.. Modulated responses are acquired using laser vibrometry. Various areas of monitored composite structures are investigated to establish positions exhibiting the largest intensities of vibro-acoustic modulations resulting from impact damage. The study shows that sensor location in composite structures is important for efficient damage detection.

Paper Details

Date Published: 20 April 2012
PDF: 10 pages
Proc. SPIE 8348, Health Monitoring of Structural and Biological Systems 2012, 83482G (20 April 2012); doi: 10.1117/12.915282
Show Author Affiliations
Andrzej Klepka, AGH Univ. of Science and Technology (Poland)
Wieslaw J. Staszewski, AGH Univ. of Science and Technology (Poland)
Francesco Aymerich, Univ. degli Studi di Cagliari (Italy)
Tadeusz Uhl, AGH Univ. of Science and Technology (Poland)

Published in SPIE Proceedings Vol. 8348:
Health Monitoring of Structural and Biological Systems 2012
Tribikram Kundu, Editor(s)

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