Acoustic impulse studies of radiation from liquid‐solid interfaces

Abstract

A modified technique has baen daveloped for laboratory studies of acoustic radiation from solids submerged in liquids. Plane and cylindrical targets are irradiated with laser‐induced acoustic impulses of the order of 0.1 μsec in duration. Schlieren optical and acoustic probe techniques are used to examine the resulting acoustic signals. Special consideration is being given to the excitation of surface waves on the liquid‐solid interface. The short duration of the incident acoustic impulses makes it possible to detect effects that may be less apparent in data obtained with pulsed sinusoid or continuous‐wave techniques. [Supported in part by the Office of Naval Research.]