Laser generation of convergent acoustic waves for materials inspection |
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| Authors: | P Cielo F Nadeau M Lamontagne |
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| Institution: | Industrial Materials Research Institute, National Research Council of Canada, Boucherville, Quebec, Canada, J4B 6Y4 |
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| Abstract: | A laser technique for generating convergent acoustic waves is described. The optically probed Rayleigh wave in the centre of convergence shows an amplification factor of the order of 20 with respect to a collimated surface wave. Applications to the ultrasonic characterization of layered materials and to crack detection are described. |
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| Keywords: | ultrasonic testing lasers surface acoustic waves |
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