A Comparison of Three Techniques to Determine the Nonlinear Ultrasonic Parameter β

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1997
Authors
Hurley, D.
Yost, W.
Boltz, E.
Fortunko, C.
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Altmetrics
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Research Projects
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Abstract

In this paper, we describe experiments to evaluate the use of a laser interferometer as a quantitative probe of nonlinear ultrasonic propagation. Although other detection methods for nonlinear ultrasonics have been in use for several years — most notably capacitive and piezoelectric receivers — interferometric detection provides advantages not available with these methods. The interferometer provides a direct means of absolute amplitude calibration, is noncontacting, possesses a wide bandwidth, requires less extensive sample preparation than the capacitive method, and affords excellent spatial resolution.

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