High sonar transmission composition

Details High sonar transmission composition High sonar transmission composition

1987-10-13

1988-11-15

Bell, James J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including interlaminar mechanical fastener

428246, 428251, 428257, 428284, 428285, 428286, 428288, 428413, 428414, 428415, 428421, 428408, 428902, D03D 300

Patent

active

047848987

ABSTRACT:
Plastic compositions having good sonar transmission, that is low loss of sound transmission, are a composite of a low loss sonar material, for example polyethylene, and a high tensile strength material, for example fiberglass, adhered together by a binder, for example an epoxy. The composite generally has a tensile strength of greater than 100,000 PSI. The composites unexpectantly have a lower sound level loss than would be expected based upon a linear proportion of the amount of high flexural strength material contained therein.

REFERENCES:
patent: 4197920 (1980-04-01), Cluzel et al.
patent: 4596736 (1986-06-01), Eichhorn et al.
patent: 4600643 (1986-07-01), Dwulet
patent: 4613535 (1986-09-01), Harpell et al.
patent: 4690860 (1987-09-01), Radvan et al.

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