Acoustic energy absorbing material

Details Acoustic energy absorbing material Acoustic energy absorbing material

1986-10-16

1988-07-19

Kyle, Deborah L.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

181286, 181288, 181290, 367 1, 367171, H04R 1700

Patent

active

047590009

ABSTRACT:
An acoustic energy absorbing baffle comprising a fluid containment means having an acoustic window means, a viscous fluid contained within said fluid containment, a porous material comprising strands of wire and being immersed within said viscous fluid means, a compliant mass means and means for holding said compliant mass means in close proximity of said porous material means such that the motion of said compliant mass means is imparted to said porous material. Incident acoustical energy is transmitted through the acoustic window and translated into energy absorbing motion of the porous material by acoustical excitation of the compliant mass means.

REFERENCES:
patent: 2415832 (1947-02-01), Mason
patent: 3858165 (1974-12-01), Pegg
patent: 4126149 (1978-11-01), Reitz
patent: 4179627 (1979-12-01), Reitz
patent: 4353768 (1982-10-01), Goodman
patent: 4399526 (1983-08-01), Eynck
patent: 4439497 (1984-03-01), DiFoggio
patent: 4450544 (1984-05-01), Denaro et al.
patent: 4528652 (1985-07-01), Horner et al.

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