Sound Absorbing Material.
Abstract
The patent application concerns a novel combination of molded plastic foam material and deaerated plastic material bonded together so as to have a boundary or interface therebetween that is characterized by a large number of acoustic energy concentrating surfaces. Acoustic energy arriving from an aqueous medium into the deaerated material is focused by the boundary surfaces into small zones of high energy intensity, which promotes dispersion of the energy into the foam material where it is dissipated. It is a principal object of the invention to provide an improved sound or acoustic energy absorbing material for use in underwater environments, for example in sonar systems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 15, 1974
- Accession Number
- ADD000713
Entities
People
- Rufus L. Cook
Organizations
- United States Department of the Navy