Analysis of alternating current excitation of a wire rope by a toroidal coil
- 1 December 1977
- journal article
- conference paper
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 48 (12) , 4893-4897
- https://doi.org/10.1063/1.323615
Abstract
An idealized magnetic sheet current model for a toroidal coil which encircles a conducting ferromagnetic rope is analyzed. This configuration is suitable for the nondestructive testing of wire ropes and cables. Numerical results for the axial electric current density induced in the rope reveal that low frequencies on the order of 10 Hz are required to produced a uniform current in a typical rope. For a toroidal coil which does not completely encircle the rope, the azimuthal symmetry is lost and harmonics in φ are produced. These harmonics are large but decay rapidly away from the source.This publication has 1 reference indexed in Scilit:
- Choice of frequency for eddy-current tube testingBritish Journal of Applied Physics, 1960