High sonar transmission composition
AssigneeThe B. F. Goodrich Company
InventorRam S. Raghava
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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.
Claims21
A high sonar transmission composition, comprising:
- a plastic composite containing at least one layer of a low sound level loss material, at least one layer of a high tensile strength material, and a relatively rigid binder bonding said layers together, the amount of said low sound level loss material being an effective amount so that said composite has a sound level loss of about 4 decibels or less at 100 kilohertz.
A composite of high sonar transmission capabilities, comprising:
- at least one layer of a high tensile strength material, at least one layer of a high sonar transmission material, and a binder bonding said tensile strength material layer and said high sonar transmission material layer, the amount of said high sonar transmission material being an effective amount so that said composite is capable of transmitting a high amount of sonar therethrough.
Dependencies are inferred from the claim text.