Ultrasonic test head

Details Ultrasonic test head Ultrasonic test head

1986-11-05

1988-06-14

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310336, 73649, H01L 4108

Patent

active

047514205

ABSTRACT:
An ultrasonic test head including an oscillating crystal (1). A damping body (2) is mounted on the side of the crystal which faces away from the sonic beam direction. The damping body includes a plurality of sound-conducting and sound-absorbing lamellae (3, 5) which are stacked alternately on one another and each have one side thereof coupled to the oscillating crystal (1) thereby providing a high acoustic impedance as well as a high acoustic absorption.

REFERENCES:
patent: 3794866 (1974-02-01), McElroy
patent: 4507582 (1985-03-01), Glenn
Patent Abstracts of Japan, P-169 dated Jan. 21, 1983.
Article entitled "Hybrid Linear and Matrix Acoustic Arrays", from Ultrasos, May 29, 1980.

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