Method and apparatus for performing ultrasonic flaw detection by

Details Method and apparatus for performing ultrasonic flaw detection by Method and apparatus for performing ultrasonic flaw detection by

1991-11-12

1994-05-10

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

73614, 73620, G01N 2910

Patent

active

053097653

ABSTRACT:
An apparatus for performing ultrasonic flaw detection, wherein an ultrasonic transmitter transmits a pulse signal having a designated carrier frequency and a designated cycle count to an ultrasonic probe. An ultrasonic receiver receives the echo signal output from the ultrasonic probe. The peak frequency and the frequency bandwidth of the echo signal received by the ultrasonic receiving unit are detected by a signal analysis unit. A transmission control unit designates the carrier frequency and the cycle count of the pulse signal output from the ultrasonic transmission unit so that the detected peak frequency and the detected frequency bandwidth become a flaw detection condition peak frequency and a flaw detection condition frequency bandwidth, respectively.

REFERENCES:
patent: 4052889 (1977-10-01), Mucciardi et al.
patent: 4364273 (1982-12-01), Redding
patent: 4545250 (1985-10-01), Miwa
patent: 4603584 (1986-08-01), Bartle et al.
patent: 4759221 (1988-07-01), Ortlieb et al.

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