Method of and apparatus for magnetic saturation testing a wire r

Details Method of and apparatus for magnetic saturation testing a wire r Method of and apparatus for magnetic saturation testing a wire r

1987-03-19

1989-05-02

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Plural tests

324232, 324242, G01N 2783, G01N 2790

Patent

active

048272159

ABSTRACT:
A wire rope tester which can detect broken wires, area reductions, or wire contact irregularities. The tester includes two permanent magnetic stacks which produce axial adjacent and opposed DC magnetic fields which magnetize the rope. Broken wires are indicated by flux variations when the flux density is at saturation; area reductions are related to flux variations; also at saturation flux density; and wire contact pattern changes produce detachable eddy current flux variations when the flux density gradient is constant.

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Herbert R. Weischedel, "The Inspection of Wire Ropes", Copr 1985, Material Evaluation, vol. 43, No. 13, pp. 1592-1606.

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