Sound Absorbing Material.

reportActive / Technical Report | Accession Number: ADD000713 | Need Help?

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.

Author(s):
Cook, Rufus L.
Author Organization(s):
DEPARTMENT OF THE NAVY WASHINGTON D C
Descriptive Note:
Patent Application,
Pagination:
0016

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Government-owned Invention Available For Licensing. Copy Of Application Available Ntis.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PAT-APPL-514 540
 Subject Terms
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*Sonar equipment, *Acoustic filters, *Underwater equipment, *Polyurethane resins, Foam, Laminates, Anechoic chambers, Underwater sound, Patents
Field(s)/Group(s):
Plastics, Acoustic Detection and Detectors, Acoustics
Keyword(s):
PAT CL 181 336, *Patent applications
Report Date:
1974 Oct 15