Method of and apparatus for simultaneously testing a wire rope f

Details Method of and apparatus for simultaneously testing a wire rope f Method of and apparatus for simultaneously testing a wire rope f

1991-11-06

1993-03-30

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Plural tests

324242, G01N 2772, G01N 2782, G01R 3312

Patent

active

051987651

ABSTRACT:
A wire rope is tested simultaneously for multiple types of defects by magnetically saturating the rope at two locations in one sense and at an intermediate location in an opposite sense. A sensing coil at any of these locations detects cross sectional area variations in the rope. Two sensing coils positioned respectively between each pair of adjacent locations defect contact pattern variations in the rope. Broken wires are detected by two coils located respectively on opposing sides of the intermediate location and spaced apart by a distance which equals the radius of the coils.

REFERENCES:
patent: 3378761 (1968-04-01), Morgan
patent: 3881151 (1975-04-01), Bigelow, Jr.
patent: 4495465 (1985-01-01), Tomaiuolo et al.
patent: 4929897 (1990-05-01), Van Der Walt
patent: 5036277 (1991-07-01), Van Der Walt

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