Method and apparatus for providing compensation for variations i

Details Method and apparatus for providing compensation for variations i Method and apparatus for providing compensation for variations i

1990-09-10

1992-07-14

Snow, Walter E.

Electricity: measuring and testing

Magnetic

With compensation for test variable

324202, 324226, G01R 3312, G01N 2782

Patent

active

051306514

ABSTRACT:
A non-contact eddy current inspection system provides for compensation for variations in the distance between the eddy current probe and the workpiece surface. Probe height from the surface is first determined for a scan using a vector analysis of the signals through inductive coils. Height compensated data signals are then compared against a threshold value to determine the presence of flaws in a workpiece surface.

REFERENCES:
patent: 4761610 (1988-08-01), Svegander et al.

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