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Proceedings Paper

Breathing crack localization using bio-inspired combination tone
Author(s): Gi-Woo Kim; David R. Johnson; Fabio Semperlotti; K. W. Wang
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Paper Abstract

A new damage detection technique is presented which can localize a breathing crack in a metallic rod-like structure. Biologically inspired by the combination tone phenomenon which occurs in the human auditory system, the nonlinear signal produced at the difference combination frequency of the two harmonic excitation frequencies ( f1 - f2 ) is used to detect and localize the breathing crack. An experimental investigation is performed to verify the proposed approach. Compared to previously introduced techniques for detection of breathing cracks based on super-harmonic or subharmonic nonlinear response signals, the proposed approach is much more robust and easier to implement.

Paper Details

Date Published: 31 March 2011
PDF: 10 pages
Proc. SPIE 7984, Health Monitoring of Structural and Biological Systems 2011, 79841Q (31 March 2011); doi: 10.1117/12.880159
Show Author Affiliations
Gi-Woo Kim, Kyungpook National Univ. (Korea, Republic of)
David R. Johnson, Univ. of Michigan (United States)
Fabio Semperlotti, Univ. of Michigan (United States)
K. W. Wang, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 7984:
Health Monitoring of Structural and Biological Systems 2011
Tribikram Kundu, Editor(s)

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