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Proceedings Paper

Laser generation and detection of ultrasound for materials characterization
Author(s): S. Gareth Pierce; Brian Culshaw; Q. Shan
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Paper Abstract

The authors describe the application of laser-ultrasonic sources in combination with interferometric detectors to monitor ultrasonic Lamb waves propagating in metal and composite structure plate samples. Using a high powered pulsed laser source, and temporally and spatially sampling the resultant acoustic field, it was possible to directly measure the Lamb wave phase velocities of several modes simultaneously. A further development has been the demonstration of a low power CW laser source capable of generating Lamb waves in a steel sample at a power density well below the ablation damage threshold.

Paper Details

Date Published: 29 September 1998
PDF: 6 pages
Proc. SPIE 3407, International Conference on Applied Optical Metrology, (29 September 1998); doi: 10.1117/12.323353
Show Author Affiliations
S. Gareth Pierce, Univ. of Strathclyde (United Kingdom)
Brian Culshaw, Univ. of Strathclyde (United Kingdom)
Q. Shan, Univ. of Strathclyde (United Kingdom)

Published in SPIE Proceedings Vol. 3407:
International Conference on Applied Optical Metrology
Pramod Kumar Rastogi; Ferenc Gyimesi, Editor(s)

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