Circumferentially compensating eddy current probe with alternate

Details Circumferentially compensating eddy current probe with alternate Circumferentially compensating eddy current probe with alternate

1987-02-19

1989-02-28

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetic sensor within material

324225, 324232, 324242, G01N 2790, G01R 3312

Patent

active

048089273

ABSTRACT:
An eddy current probe capable of detecting localized defects with 100% circumferential coverage in tubes, tubes under support plates etc., is disclosed. The probe employs multiple receiver coils with each excitation coil, operating in transmit-receive mode in which alternate receiver coils are electromagnetically polarized in opposite directions. The probe detects localized defects and eliminates concentric variations.

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