Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1981-07-23
1987-12-29
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
367156, 367169, 310 26, G01V 138
Patent
active
047165561
ABSTRACT:
An acoustic transducer is provided that uses a layer of magnetostrictive ferromagnetic material having high magneto-mechanical coupling. The ferromagnetic material is adhered to a part of the outer surface of a resilient rod, so that an incident acoustic signal causes a change in stress in the magnetic material and, in turn, a change in the material's magnetization. An electrical coil surrounds the magnetic material and converts the changing magnetization into an electrical signal. A plurality of transducers may be assembled into an array and towed behind a ship to detect underwater acoustic signals.
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Haznedar Errol A.
Kearney James E.
Raskin Donald
Allied-Signal Inc.
Buff Ernest D.
Fuchs Gerhard H,.
Hampilos Gus T.
Moskowitz Nelson
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