Ultrasonic testing method for detecting flaws of balls for struc

Details Ultrasonic testing method for detecting flaws of balls for struc Ultrasonic testing method for detecting flaws of balls for struc

1992-07-28

1993-03-23

Arana, Louis

Measuring and testing

Vibration

By mechanical waves

73640, G01N 2904

Patent

active

051953722

ABSTRACT:
An ultrasonic testing method for detecting flaws of balls for structural members comprises rotating a ball to be tested in an ultrasonic wave transmitting medium. At least two focus-type ultrasonic probes are provided and arranged so as to cover nonoverlapping flaw-detecting regions on and/or inside the ball. Flaws in the ball are detected by sending ultrasonic waves from the probes toward the ball. An apparatus for detecting flaws of balls comprises a ball holding portion for rotatably holding the ball to be tested, at least two focus-type probes for detecting flaws and at least two probe mounting portions for mounting the probes thereof so that respective axes of the probes are each capable of being set eccentrically relative to the center of the ball and wherein the focal positions of the probes are variable.

REFERENCES:
patent: 3803904 (1974-04-01), Diem
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patent: 4387596 (1983-06-01), Fenkner
patent: 4969361 (1990-11-01), Kawasaki et al.
patent: 5001674 (1991-03-01), Kawasaki
patent: 5005417 (1991-04-01), Kawasaki et al.

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