Ultrasonic transducer

Details Ultrasonic transducer Ultrasonic transducer

1988-07-14

1990-03-13

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

310336, G01N 2900

Patent

active

049074547

ABSTRACT:
An ultrasonic piezoelectric transducer and a method for measuring and/or monitoring various physical properties of a member, in-situ, are disclosed. The transducer includes a sleeve which is received in a blind bore provided in the member, a piezoelectric element positioned within the blind bore, and an aligning spacer means interposed between the end of the sleeve and the piezoelectric element. By the application of appropriate voltage pulses to the piezoelectric element causing interrogating signals to be applied to the member, and the measurement of the time interval between the application of an interrogating signal and the receipt of a return from the member, various physical properties of the member can be determined.

REFERENCES:
patent: 4510793 (1985-04-01), Ploegaert et al.
patent: 4539846 (1985-09-01), Grossman
patent: 4679160 (1987-07-01), Whitener

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