Transducer backing material

Details Transducer backing material Transducer backing material

1995-09-29

1997-07-15

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

H04R 128

Patent

active

056489412

ABSTRACT:
An electroacoustic transducer having a base formed of a transducer backing material for use in supporting an array of active elements. The backing material is formed as a composite of a preform, preferably selected according to a fiber architecture, and an acoustically-attenuating matrix. Preferred embodiments of the preform include linear, planar, and integrated fiber systems. A particularly preferred embodiment includes a macroporous mesh structure provided in the form of stacked sheets, or an integrated fiber system, having therein fibers arranged in spaced relationship. The fibers define a plurality of openings which in turn provide voids that may be filled by the matrix via techniques such as vacuum-impregnation.

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