Ultrasonic Examination of Liquid-Solid Boundaries Using a Right-Angle Reflector Technique

Abstract

A motor-driven ultrasonic goniometer is described consisting of a single transducer and a 90° reflector. This relatively simple device facilitates rapid investigation and automatic recording of reflection data. The reflectivity curves are interpreted in terms of reflector geometry and the physical properties of the specimen. Among other things, the technique has been used to determine surface-wave velocities in the Y-Z plane of quartz, and the results are shown to be in reasonable agreement with both theoretical and other experimental data.