Annular eddy current test coil with magnetic laminations adjacen

Details Annular eddy current test coil with magnetic laminations adjacen Annular eddy current test coil with magnetic laminations adjacen

1975-08-01

1977-01-11

Corcoran, Robert J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

336234, G01R 3312

Patent

active

040029670

ABSTRACT:
A magnetic pole and coil assembly for concentrating eddy currents in a limited peripheral portion of a metal product being examined by the assembly. The assembly comprises at least one winding adapted to produce a magnetic field when supplied with alternating electrical current, and laminations of high permeability magnetic material disposed closely adjacent a portion of the winding to concentrate the magnetic field in the vicinity of the magnetic laminations.

REFERENCES:
patent: 2351595 (1944-06-01), Bindschelder
patent: 3500181 (1970-03-01), Jackson
patent: 3518533 (1970-06-01), Arnelo
patent: 3916302 (1975-10-01), Madewell

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