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Proceedings Paper

Crack detection diagnostics using ultrasonic insonification and pattern recognition
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Paper Abstract

Sudden crack growth has the potential to cause catastrophic failure when a crack reaches a critical crack size. Early detection of crack formation helps to minimize this potential. This research focuses on the use of guided ultrasonic waves (GUWs) to detect crack formation. Experiments are conducted on test specimens in which fatigue cracks are grown through cyclic loading. Macro Fiber Composite (MFC) and piezoelectric disc actuators are used as sensors to induce and receive various GUWs ranging in frequency from 25 to 100 kHz. Preliminary experimental results are given.

Paper Details

Date Published: 8 April 2009
PDF: 8 pages
Proc. SPIE 7295, Health Monitoring of Structural and Biological Systems 2009, 72950T (8 April 2009); doi: 10.1117/12.815393
Show Author Affiliations
Gregory J. S. Jarmer, Univ. of California, San Diego (United States)
Michael D. Todd, Univ. of California, San Diego (United States)


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

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