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Proceedings Paper

Noncontact material evaluation for characterization and wear detection using laser-generated ultrasound and interferometric detection
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Paper Abstract

This paper describes an all optical non-contact technique to determine material properties in a mechanical structure. Using optical generation of ultrasound and interferometric optical detection to determine the dispersion curves for acoustic (Lamb) waves, readily available numerical algorithms have produced values of Young's Modulus and Poisson ratio with confidence limits of a few percent. The approach may be applied to inspection regions with dimension in the range microns to centimetres.

Paper Details

Date Published: 27 July 2004
PDF: 9 pages
Proc. SPIE 5384, Smart Structures and Materials 2004: Smart Sensor Technology and Measurement Systems, (27 July 2004); doi: 10.1117/12.549024
Show Author Affiliations
Graham Thursby, Univ. of Strathclyde (United Kingdom)
Brian Culshaw, Univ. of Strathclyde (United Kingdom)
Borja Sorazu, Univ. of Strathclyde (United Kingdom)
Syed Atique, Univ. of Strathclyde (United Kingdom)
Fengzhong Dong, Univ. of Strathclyde (United Kingdom)


Published in SPIE Proceedings Vol. 5384:
Smart Structures and Materials 2004: Smart Sensor Technology and Measurement Systems
Eric Udd; Daniele Inaudi, Editor(s)

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