INSTRUMENTATION FOR HOLOGRAPHIC INTERFEROMETRIC ANALYSIS OF SONAR TRANSDUCERS,

摘要

Equipment for holographic interferometric analysis of sonar transducers has been developed,and its capability has been demonstrated. This paper briefly reviews the theory of holographic interferometry of vibrating objects,describes equipment designed to measure vibration characteristics (in air) of sonar transducers,and reports on the feasibility of using holographic interferometry to evaluate single and multiple-element vibrating sonar transducers under water. (Author)