Method and apparatus for testing balls with the use of eddy curr

Details Method and apparatus for testing balls with the use of eddy curr Method and apparatus for testing balls with the use of eddy curr

1990-03-19

1991-04-16

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Magnetic test structure elements

324226, 324238, G01R 3300, G01N 2772

Patent

active

050086235

ABSTRACT:
Method, according to the eddy current method, for checking damage on the surface of round, e.g., ball-shaped, metal objects, whereby a similar object is supported and made to rotate around at least one axis while an electronic contact-free scanner or sensor is aimed at the surface of the object, characterized by the fact that the round object is placed on a fixed support and a gaseous medium, e.g., air is blown against the object in such manner that between the support and the object a gas or air layer is formed which carries the object, and the object is made to rotate by the gas or air flow.

REFERENCES:
patent: 3607198 (1971-09-01), Meunier et al.
patent: 4430614 (1984-02-01), Gereg
patent: 4551677 (1985-11-01), Bankston

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