Method of selecting ultrasonic transducers for use in ultrasonic

Details Method of selecting ultrasonic transducers for use in ultrasonic Method of selecting ultrasonic transducers for use in ultrasonic

1992-04-10

1993-07-20

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Testing, monitoring, or calibrating

367191, 181 05, 73 1DV, H04B 1700

Patent

active

052299732

ABSTRACT:
A method of selecting the ultrasonic transducers which are used in non destructive ultrasonic inspection apparatus consists of establishing under predetermined conditions the frequency spectra of the transducers under consideration, comparing these spectra with the frequency spectrum of a reference transducer obtained under the same predetermined conditions, and selecting only those transducers of which the frequency spectrum is substantially identical in form to that of the reference transducer.

REFERENCES:
patent: 3659255 (1972-04-01), Trott
patent: 4434648 (1984-03-01), Drost et al.
"Tone-Burst Testing of Pulse-Echo Transducers", by K. Erikson, IEEE Transactions on Sonics and Ultrasonics, vol. Su-26, No. 1 Jan. 1979.
"Acoustic Emission Transducer Calibrator" by W. Leschek, Materials Evaluation, vol. 33, No. 2, Feb. 1975.
"Vibration Transducer Calibration Using Comparator Method" by K. Unholtz, Instrument Society of America, 22 ISA Conference, Sep. 11-14, 1967.
IEEE 1988 Ultrasonics Symposium, vol. 1, Oct. 5, 1988, Chicago, Ill., USA, pp. 895-900, H. A. Kunkel, "New Technique for Characterizing Ultrasonic Transducers Independently of Pulser and Receiver . . . ".
Measurement Techniques, vol. 25, No. 3, Apr. 1982, New York, USA, pp. 270-272, I. A. Krivosheef, et al., "Calibration of Piezoelectric Transducers".
Journal of Acoustic Society of America, vol. 78, No. 5, Nov. 1985, New York, USA, pp. 1519-1523, J. D. Aindow, et al., "Quantitative Investigation of Disc Ultrasonic Sources".
La Pratique Du Controle Industriel Par Ultrasons, vol. 2, pp. 53-61, J. L. Pelletier, "Chapitre II-Technologie Du Controle Par Ultra-Sons".

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