Measuring and testing – Vibration – By mechanical waves
Patent
1981-02-02
1983-06-14
Ciarlante, Anthony V.
Measuring and testing
Vibration
By mechanical waves
73640, 73660, G01N 2900, G01M 1300, G01H 100
Patent
active
043875963
ABSTRACT:
Spherical bodies, such as bearing balls, are tested for machining irregularities or structural defects by subjecting them to supersonic vibrations from two or more ultrasound generators through the intermediary of a coupling liquid in which these bodies are immersed. One ultrasound generator has an axis in line with the body being tested while the other generator or generators have axes including acute angles with the radial directions of that body. The body is subjected to rotation in different planes by injecting the coupling liquid, alternately or simultaneously but at varying relative rates, through two different nozzles into an interspace separating the body from a spherically concave supporting surface.
REFERENCES:
patent: 3183709 (1965-05-01), Rankin et al.
patent: 3837202 (1974-09-01), Hetherington et al.
patent: 4099418 (1978-07-01), Bennett et al.
patent: 4281548 (1981-08-01), Kober
Ultrasound Tests Ball Bearings; Ultrasonics, Nov. 1973, p. 247, by Hoffman Pollard Ltd., Gloucestershire, U.K.
Chapter 23 of a book titled "Ultrasonic Testing of Materials" by Krautkramer, 2nd Edition, Springer Verlag 1977.
Fenkner Max
Wehner Hilmar
Carlson David V.
Ciarlante Anthony V.
FAG Kugelfischer Georg Schafer & Co.
Ross Karl F.
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