Title :
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
fDate :
3/1/1997 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
