Composite ultrasonic transducers and methods for making same

Details Composite ultrasonic transducers and methods for making same Composite ultrasonic transducers and methods for making same

1984-10-17

1987-07-28

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310357, H01L 4108

Patent

active

046833960

ABSTRACT:
A ultrasonic transducer using such a piezoelectric composite that a number of piezoelectric poles made of piezoelectric ceramics are arranged in a plate-like polymer matrix perpendicular to the plate surface. The volume ratio of the piezoelectric poles is set in a range of 0.15-0.75 and a spacing between every adjacent piezoelectric poles is set smaller than the thickness of the polymer plate, thereby resulting in a transducer which has higher sensitivity than the conventional one using a homogeneous piezoelectric ceramic plate.

REFERENCES:
patent: 4412148 (1983-10-01), Klicker et al.
patent: 4518889 (1985-05-01), Hoen
Transverse Honeycomb Composite Transducers, by Safari et al, Materials Research Bulletin, vol. 17, No. 3, Mar. 1982, pp. 301-308.

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