Calculation of the eddy-current flow around a cylindrical through-hole in a finite-thickness plate (original) (raw)

IEEE Transactions on Magnetics, 2015

Abstract

ABSTRACT A semi-analytical solution to the eddy-current induction problem in a conducting, non-magnetic plate near a cylindrical through-hole is derived by means of the second order vector potential and the domain truncation technique. The construction of a solution, which satisfies simultaneously the field continuity across the cylindrical surface of the hole and the planar interfaces of the plate proves to be a very challenging problem, and thus a special superposition of partial sub-solutions is proposed. The presented solution is part of a more general development aiming at the calculation of the probe interaction with material flaws located in the vicinity of the hole by means of the integral equation formalism. These tasks will be the subject of a further article. The comparison of the semi-analytical results against both finite elements simulations as well as experimental data demonstrates an excellent agreement.

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