Method and apparatus for non-destructively detecting flaws in a

Details Method and apparatus for non-destructively detecting flaws in a Method and apparatus for non-destructively detecting flaws in a

1995-04-03

1995-12-05

Wieder, Kenneth A.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324227, 324237, 324718, 204401, G01N 2772, G01R 3312

Patent

active

054732484

ABSTRACT:
A system and method of automatic, in-line electrical quality control of a carbon anode including detecting internal flaws in the carbon anode by measuring an eddy-current loss of the carbon anode and determining intrinsic resistivity of the carbon anode by measuring resistivity of the carbon anode and determining the electrical quality of the carbon anode according to the measured eddy-current loss and the measured resistivity.

REFERENCES:
patent: 4667149 (1987-05-01), Cohen
patent: 4922201 (1990-05-01), Vernon
patent: 4924182 (1990-05-01), Vernon
patent: 5028100 (1991-07-01), Valleau
patent: 5138269 (1992-08-01), Deutsch

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