Apparatus and method for detecting and/or measuring flaws in con

Details Apparatus and method for detecting and/or measuring flaws in con Apparatus and method for detecting and/or measuring flaws in con

1998-03-17

2000-01-11

Snow, Walter E.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324225, G01N 2782, G01R 3312

Patent

active

060140240

ABSTRACT:
The present invention uses a magnet and sensor coil unilaterial and in relative motion to a conductive material, to measure perturbation or variation in the magnetic field in the presence of a flaw. A liftoff compensator measures a distance between the conductive material and the magnet.

REFERENCES:
patent: 2519367 (1950-08-01), Gunn et al.
patent: 2970256 (1961-01-01), Sazyhski et al.
patent: 3881151 (1975-04-01), Bigelow

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