Ultrasonic transducer for monitoring acoustic emissions

Details Ultrasonic transducer for monitoring acoustic emissions Ultrasonic transducer for monitoring acoustic emissions

1994-01-03

1996-02-20

O'Shea, Sandra L.

Measuring and testing

Vibration

By mechanical waves

73629, G01N 2928

Patent

active

054920140

ABSTRACT:
An ultrasonic piezoelectric transducer for monitoring acoustic events in a medium is disclosed. The transducer includes an elongated body member having a blind bore therein, a piezoelectric crystal which is received in the blind bore within the body member and which contacts the bottom surface thereof, and a rod which is received in the blind bore and which firmly contacts the piezoelectric crystal compressing the crystal against the bottom of the blind bore. The tip of the elongated body member has a convex configuration forming a lens permitting the interception of acoustic events over a wide angle and the direction of same toward the piezoelectric crystal for monitoring and detection purposes.

REFERENCES:
patent: 3512402 (1970-05-01), Foster
patent: 4398424 (1983-08-01), Abts
patent: 4455873 (1984-06-01), Abts
patent: 4658650 (1987-04-01), Yorinaga
patent: 4907454 (1990-03-01), Hazony
patent: 4918990 (1990-04-01), Fowler

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