FR2686725A1 - Sound damping material for underwater use - Google Patents

Abstract

The invention relates to a sound damping material for underwater use. This material includes a layer of an open structure of a solid material which exhibits open cellular structures including 2 to 20 cells per centimetre intended, in service, to be filled with water, the said layer having a thickness at least equal to 1 centimetre and consisting of a plastic material which has a glass transition temperature for frequencies from 50 to 500 kHz close to a temperature of use.

Description

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