Optical sensing of in-plane ultrasonic transients

McKie, A. D. W.; Wagner, J. W.
September 1988
Applied Physics Letters;9/19/1988, Vol. 53 Issue 12, p1043
Academic Journal
An optical sensor has been developed, based on the differential laser Doppler anemometer, for the detection of in-plane ultrasonic transients. Ultrasonic pulse propagation around a 90° corner has been investigated in an aluminum block. By generating ultrasonic pulses on diametrically opposite sides of the detector a polarity inversion of the ultrasonic pulses detected is demonstrated. The results obtained are as expected for the case of in-plane displacement measurements.


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