Numerical approach for ECT by using boundary element method with Laplace transform

Author

Enokizono, M. ; Todaka, T. ; Shibao, K.

Author_Institution

Fac. of Eng., Oita Univ., Japan

Volume

33

Issue

2

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

2135

Lastpage

2138

Abstract

This paper presents an inverse analysis by using BEM with Laplace transform. The method is applied to a simple problem in the eddy current testing (ECT). Some crack shapes in a conductive specimen are estimated from distributions of the transient eddy current on its sensing surface and magnetic flux density in the lift-off space. Because the transient behavior includes information on various frequency components, the method is applicable to the shape estimation of a comparatively small crack

Keywords

Laplace transforms; boundary-elements methods; crack detection; eddy current testing; magnetic flux; transients; Laplace transform; boundary element method; comparatively small crack; conductive specimen; crack shapes estimation; eddy current testing; inverse analysis; lift-off space; magnetic flux density; sensing surface; transient eddy current distribution; Boundary element methods; Eddy current testing; Eddy currents; Electrical capacitance tomography; Frequency estimation; Laplace equations; Magnetic analysis; Magnetic flux density; Shape; Surface cracks;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.582753

Filename

582753