Laser Based Transduction Of Ultrasound For Practical NDT Applications

A. Aharoni; M. Tur; K. M. Jassby

doi:10.1117/12.951061

5 July 1989 Laser Based Transduction Of Ultrasound For Practical NDT Applications

A. Aharoni; M. Tur; K. M. Jassby;

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Proceedings Volume 1038, 6th Mtg in Israel on Optical Engineering; (1989) https://doi.org/10.1117/12.951061
Event: Sixth Meeting of Optical Engineering in Israel, 1988, Tel Aviv, Israel

Abstract

Laser based techniques for the generation and the detection of ultrasonic surface waves (SAW) are described. These methods were motivated by practical ultrasonic non-destructive testing (NDT) applications and are suitable for operation on rough surfaces which are typical to engineering materials. Wide strip laser illumination is used to generate SAW waveforms by means of a thermoelastic mechanism. For detection an holographic method has been developed, achieving sensitivities of the order of 0.1 Å at 10 MHz bandwidth on rough aluminum surfaces.

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A. Aharoni, M. Tur, K. M. Jassby, "Laser Based Transduction Of Ultrasound For Practical NDT Applications", Proc. SPIE 1038, 6th Mtg in Israel on Optical Engineering, (5 July 1989); doi: 10.1117/12.951061; https://doi.org/10.1117/12.951061

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