Journal
ULTRASONICS
Volume 38, Issue 9, Pages 891-895Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0041-624X(00)00022-6
Keywords
laser ultrasonics; thermoelastic line source; surface acoustic waves; nondestructive evaluation
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An analytical model has been developed for the generation of surface acoustic (Rayleigh) waves in an isotropic solid by a thermoelastic laser line source. For a Gaussian light intensity profile, this model leads to an expression in closed form for the normal surface displacement of the Rayleigh wave either in the near field or in the far field domain. Quantitative agreement has been found for experiments carried out with an interferometric optical probe on a duraluminum plate. (C) 2000 Elsevier Science B.V. All rights reserved.
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