Wideband sonar energy absorber

Details Wideband sonar energy absorber Wideband sonar energy absorber

1985-12-24

1986-12-09

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Sonar counter-measures

181286, E04B 182

Patent

active

046284907

ABSTRACT:
This invention relates to an acoustic energy absorbing material which abss sound energy underwater and its performance is independent of the surrounding hydrostatic pressure. It consists of a non-conducting elastomeric matrix having piezoelectric or magnetostrictive particles disposed therein for converting incident soundwave energy into heat, a corrosion resistant coating on the particles for optimizing energy absorption of sonar waves of predetermined frequency, the elastomeric matrix designed so as to have a Poisson's ratio of about 0.5 for effectively utilizing all particles so the incident soundwaves are applied to the particles as a hydrostatic stress distribution, and the acoustic energy absorbing material consisting of a plurality of thin layers of the elastomeric matrix and having high energy absorption per unit volume for providing a slight impedance mismatch between successive layers thus absorbing the predetermined energy of the soundwaves.

REFERENCES:
patent: 3515910 (1970-06-01), Fritz et al.
patent: 3614992 (1971-10-01), Whitehouse et al.
patent: 3894169 (1975-07-01), Miller

Affiliated with

Also associated with

Rating

Wideband sonar energy absorber does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wideband sonar energy absorber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wideband sonar energy absorber will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1389744