Nonlinear interaction in the vicinity of an underwater source of finite amplitude wave with noncontinuous radiating surface

Abstract

The paper contains results of experimental investigations of the pressure field distribution in the vicinity of underwater sources of non-continuous radiating surface. Two sources were examined, each in form of 16-element array. The arrays are composed of circular piezoceramic pistons of the same dimensions and radiating properties. The elements of the first source are pistons of 25-mm-diam and resonant frequency equal to 600 kHz. The second of examined sources is using piezoelements of 10-mm-diam and resonant frequency of 1.5 MHz. Shown and characterized is the impact of the discontinuity of radiating surface on the nonlinear distortion process in the vicinity of the multi-element source.