Ferromagnetic eddy current probe having multiple levels of magne

Details Ferromagnetic eddy current probe having multiple levels of magne Ferromagnetic eddy current probe having multiple levels of magne

1990-06-08

1992-05-26

Wieder, Kenneth A.

Electricity: measuring and testing

Magnetic

Magnetic sensor within material

324225, 324232, 324242, G01N 2790, G01R 3312

Patent

active

051171821

ABSTRACT:
Eddy current probes for detecting defects in a ferromagnetic tube are disclosed. The probe uses partial magnetic saturation and includes two or more eddy current measuring coil assemblies in a probe housing. The coil assemblies are spaced apart from each other and located at positions of different magnetic saturation.

REFERENCES:
patent: 4107605 (1978-08-01), Hudgell
patent: 4468619 (1984-08-01), Reeves
patent: 4704577 (1987-11-01), Junker et al.
patent: 4808924 (1989-02-01), Cecco et al.
patent: 4808927 (1989-02-01), Cecco et al.
patent: 4855676 (1989-08-01), Cecco et al.

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