Noncontact detection of surface-breaking cracks using a laser acoustic source and an electromagnetic acoustic receiver
Journal Article
·
· J. Mat. Res.; (United States)
An electromagnetic acoustic transducer (EMAT) is used to detect laser-generated surface acoustic transients. The surface acoustic waves are broadband and can be used to detect and size surface-breaking cracks if used in conjunction with a broadband detector. A broadband EMAT is described and its use to locate artificial surface-breaking defects in both aluminum and steel is demonstrated. A second study reveals that it can also be used for the detection of real surface-breaking cracks, even on rusty steel surfaces. 10 references.
- Research Organization:
- Hull Univ., England
- OSTI ID:
- 6961251
- Journal Information:
- J. Mat. Res.; (United States), Vol. 49
- Country of Publication:
- United States
- Language:
- English
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