Ultrasonic testing method

Details Ultrasonic testing method Ultrasonic testing method

1990-08-24

1991-10-15

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

73593, 73622, G01N 924

Patent

active

050563688

ABSTRACT:
An ultrasonic testing method for detection of flaws in a material to be tested having a curved surface portion by use of an ultrasonic probe, wherein a center axis of curvature of the curved surface portion of the material to be tested and the center axis of the probe are set in an eccentric relationship so that the angle of refraction of an ultrasonic wave is 90.degree., and the probe comprises a tip portion having a curved surface of the same kind as the curved surface portion of the material to be tested and a radius of curvature of from 1.0 to 3.0 times the radius of curvature of the curved surface portion of the material to be tested. The method enables detection of internal flaws in, particularly, a spherical or cylindrical body formed of a ceramic and used as a bearing member.

REFERENCES:
patent: 4297886 (1981-11-01), Anikeev et al.
patent: 4387596 (1983-06-01), Fenkner et al.
patent: 4406167 (1983-09-01), Maeda
patent: 5001674 (1991-03-01), Kawasaki
patent: 5005417 (1991-04-01), Kawasaki et al.

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