Holographic interferometry applied to the study of in‐water dynamic behavior of acoustic transducers

Abstract

Holographic interferometry has been shown to be a successful method for characterization and testing of the behavior of acoustic transducers operating in air. Characteristics of motion and displacement are known to model the ideal behavior of these devices by defining specific geometries and symmetries in time‐averaged holographic interference fringe patterns [H. Fein, J. Acoust. Soc. Am. Suppl. 1 73, S25 (1983)]. These techniques have been extended to the study of the actual dynamics of acoustic transducers operating in the water medium. Successful comparisons of the differences between motion characteristics of transducers operating in water and air are shown to be of great value in defining their true dynamic behavior. Holographic data and comparisons are presented and discussed.