Piezoelectric polymer rectangular flexural plate hydrophone

Details Piezoelectric polymer rectangular flexural plate hydrophone Piezoelectric polymer rectangular flexural plate hydrophone

1978-07-07

1980-01-15

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310337, 310800, H01L 4110

Patent

active

041840933

ABSTRACT:
A transducer, suitable for sensing acoustic signals underwater, includes a iezoelectric polymer film. The device comprises a rectangular sandwich arrangement with a plastic frame in the center having plastic plates connected on either side and a piezoelectric polymer film on the outside of each plastic plate. The film is arranged so that the most active direction of the polymer lies in the transverse plate direction. Electric wires are connected to opposing surfaces of each piezoelectric polymer film. When the sandwich arrangement is complete an air cavity that is compliant to the stiffness of the plates is created in the center within the plastic frame.

REFERENCES:
patent: 3202962 (1965-08-01), Elston
patent: 3255431 (1966-06-01), Howatt
patent: 3663933 (1972-05-01), Madison
patent: 3763464 (1973-10-01), Laurent
patent: 3832762 (1974-09-01), Johnston et al.
patent: 4048526 (1977-09-01), Taylor
patent: 4088915 (1978-05-01), Kodama
patent: 4127749 (1978-11-01), Atoji et al.

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