Air coupled piezoelectric detection of laser -generated ultrasound

Hutchins, D.A. and Wright, WMD and Hayward, Gordon and Gachagan, Anthony (1994) Air coupled piezoelectric detection of laser -generated ultrasound. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 41 (6). pp. 796-805. ISSN 0885-3010 (https://doi.org/10.1109/58.330260)

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Abstract

A pulsed laser has been used to generate ultrasonic transients in samples of metal and fiber-reinforced polymer composite material. These have been detected using an air-coupled piezoelectric transducer. It is demonstrated that such a transduction system can be used for longitudinal waves in bulk material, Rayleigh waves at solid surfaces and Lamb waves in thin plates.