Breathing crack localization using bio-inspired combination tone

Gi-Woo Kim; David R. Johnson; Fabio Semperlotti; K. W. Wang

doi:10.1117/12.880159

31 March 2011 Breathing crack localization using bio-inspired combination tone

Gi-Woo Kim, David R. Johnson, Fabio Semperlotti, K. W. Wang

Proceedings Volume 7984, Health Monitoring of Structural and Biological Systems 2011; 79841Q (2011) https://doi.org/10.1117/12.880159
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

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.

Citation Download Citation

Gi-Woo Kim, David R. Johnson, Fabio Semperlotti, and K. W. Wang "Breathing crack localization using bio-inspired combination tone", Proc. SPIE 7984, Health Monitoring of Structural and Biological Systems 2011, 79841Q (31 March 2011); https://doi.org/10.1117/12.880159

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