Eddy-current analysis of a conductor with a crack by line integral equations with loop electric and magnetic currents as unknowns

Author

Ishibashi, Kazuhisa

Author_Institution

Dept. of Mech. Eng., Tokai Univ., Tokyo

Volume

42

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

787

Lastpage

790

Abstract

It is difficult to calculate eddy currents induced in a conductor with a crack by the surface integral equations because its adjacent edges and corners, where the equations become singular, are close, and moreover, the equations become ill-conditioned in cases where the crack gap is narrow. In this paper, we propose a method employing line integral equations with loop electric and magnetic currents as unknowns fully utilizing the boundary conditions of the surface electromagnetic fields. Solving eddy-current problems and comparing the results with those by FEM, we study how to calculate accurately the eddy currents induced in a conductor with a crack

Keywords

conductors (electric); cracks; eddy currents; finite element analysis; integral equations; crack gap; eddy current analysis; finite-element method; line integral equations; loop electric currents; loop magnetic currents; surface electromagnetic fields; Boundary conditions; Conductors; Eddy currents; Electrical capacitance tomography; Electromagnetic fields; Electromagnetic modeling; Integral equations; Magnetic analysis; Permeability; Surface cracks; Conductor with a crack; eddy-current analysis; line integral equations; loop electric and magnetic currents;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.871949

Filename

1608324