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

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3 Author(s)
Enokizono, M. ; Fac. of Eng., Oita Univ., Japan ; Todaka, T. ; Shibao, K.

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

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Magnetics, IEEE Transactions on  (Volume:33 ,  Issue: 2 )