Ultrasonic transducer for extreme temperature environments

Details Ultrasonic transducer for extreme temperature environments Ultrasonic transducer for extreme temperature environments

1991-04-17

1993-03-23

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

367173, 367188, 310327, 310336, 738665, 73644, G01N 2924

Patent

active

051953730

ABSTRACT:
An ultrasonic piezoelectric transducer that is operable in very high and very low temperatures. The transducer has a dual housing structure that isolates the expansion and contraction of the piezoelectric element from the expansion and contraction of the housing. Also, the internal components are made from materials having similar coefficients of expansion so that they do not interfere with the motion of the piezoelectric element.

REFERENCES:
patent: 3821834 (1974-07-01), McElroy
patent: 4482835 (1984-11-01), Bar-Cohen et al.
patent: 4567770 (1986-02-01), Rumbold et al.
patent: 4703656 (1987-11-01), Bhardwaj
Nondestructive Evaluation Science & Technology, a publication of Southwest Research Institute, San Antonio, Tex., vol. 5, No. 1, Jul., 1989.

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