Acoustic absorbing device

Details Acoustic absorbing device Acoustic absorbing device

1996-05-14

1998-02-03

Carone, Michael J.

Ships

Torpedoes

181286, 181290, 181294, 367173, 367176, F16F 1500, B32B 2504, B63H 2130

Patent

active

057147132

ABSTRACT:
An acoustically absorbing device is presented which can be mounted in the ructure of a vehicle. The acoustic absorbing device includes an acoustic barrier layer proximate the structure surface, an acoustic absorption material layer adjacent the acoustic barrier layer, and isolation mounts mounting the acoustic absorption material to the structure. The acoustic barrier layer includes either a barrier layer of free airspace or a barrier layer of an acoustic barrier material that is heat resistant and fluid resistant. The acoustic absorption layer is made of a material capable of dispersing incident normal pressure waves within the structure, such as a sintered aluminum absorption material. The mounts are typically spaced throughout the structure and typically include an isolation mounting device that provides isolation from vibrations in the structure.

REFERENCES:
patent: 3130700 (1964-04-01), Peterson
patent: 3783969 (1974-01-01), Pall
patent: 3821999 (1974-07-01), Guess et al.
patent: 3948346 (1976-04-01), Schindler
patent: 4399526 (1983-08-01), Eynck
patent: 4756264 (1988-07-01), Ewbank
patent: 5389746 (1995-02-01), Moody
patent: 5396855 (1995-03-01), DuBois

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