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Proceedings Paper

Structural damage detection using ultrasonic wave modulation with low-profile piezoceramic transducers
Author(s): Matteo Simondi; Wieslaw J. Staszewski; Ruztamreen B. Jenal
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Paper Abstract

The paper presents the application of the nonlinear acoustic technique for fatigue crack detection. The method uses frequency modulation of the high-frequency ultrasonic wave by the low-frequency modal excitation. Low-profile, surface-bonded piezoceramic transducers are used for acousto-vibration actuation and sensing. The paper investigates the application of the broad-band low-frequency modal excitation. The study demonstrates that small fatigue cracks can be detected in an aluminum plate by the increase of amplitude level of modulation sidebands in the ultrasonic spectra. However, the sidebands can be also observed when the crack is not present in the plate due intrinsic nonlinear effects. Further studies are recommended to investigate these findings.

Paper Details

Date Published: 8 April 2009
PDF: 9 pages
Proc. SPIE 7295, Health Monitoring of Structural and Biological Systems 2009, 72950J (8 April 2009); doi: 10.1117/12.815473
Show Author Affiliations
Matteo Simondi, The Univ. of Sheffield (United Kingdom)
Wieslaw J. Staszewski, The Univ. of Sheffield (United Kingdom)
Ruztamreen B. Jenal, The Univ. of Sheffield (United Kingdom)

Published in SPIE Proceedings Vol. 7295:
Health Monitoring of Structural and Biological Systems 2009
Tribikram Kundu, Editor(s)

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