"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Eddy current analysis for ECT of a conductor with a conductive crack by Boundary Element Method

KAZUHISA ISHIBASHI1,*

Affiliation

  1. Department of Mechanical Engineering, Faculty of Engineering, Tokai University 2-28-4 Tomigaya, Shibuya-ku, Tokyo, 151-0063 Japan

Abstract

We study how to solve eddy currents induced in a conductor with a conductive crack in order to apply to the eddy current testing (ECT). The eddy current is formulated by boundary integral equations whose unknowns are the surface electric and magnetic currents. When the skin depth is thick, computational error is increased in obtaining electromagnetic fields near the edge of the crack especially in the case of the conductive crack, and so we derive another integral equations by introducing a loop magnetic current on the crack surface. So as to check the validity of the proposed approach, we solve a typical ECT problem and compare the computed results with those by FEM..

Keywords

Conductive crack, Eddy current testing, Loop magnetic current, Surface integral equation.

Submitted at: March 13, 2008
Accepted at: May 14, 2008

Citation

KAZUHISA ISHIBASHI, Eddy current analysis for ECT of a conductor with a conductive crack by Boundary Element Method, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 5, pp. 1159-1164 (2008)