КОМБИНИРОВАННЫЙ АКУСТИЧЕСКИЙ ПРИЕМНИК

摘要

FIELD: acoustics; piezoelectric receivers for various research and engineering applications. ^ SUBSTANCE: proposed device has pressure gradient receiver incorporating metal bush with flexural bimorph sensing element installed in cross-sectional area of bush and fixed on its outline through sealed joint to inner surface of the latter; mentioned sensing element has metal diaphragm with piezoceramic disk glued thereto. Introduced in device coaxially and concentrically with respect to metal bush and joined to butt-ends of the latter through sealed joint is piezoceramic cylinder whose diameter is greater than that of bush, clearance being provided between outer surface of metal bush and inner surface of piezoceramic cylinder to form pressure receiver. In this way physically reasonable combination of pressure receiver and pressure gradient receiver having common phase center is provided without increasing its wavelength. ^ EFFECT: provision for independent pressure and pressure gradient measurements in acoustic field. ^ 1 cl, 3 dwg