Abstract: This paper deals with the computation of the quasi static electromagnetic field due to an eddy current probe scanning a conductive half space. Two homogeneous media are separated by a cylindrical metallic surface characterized by an arbitrary
aperiodic profile. The eddy current induction problem with a rough surface is rigorously tackled by a semi analytical approach based on Maxwell's equations written in a non-orthogonal coordinates system adapted to the geometry of the profile. The choice of a two dimensional eddy current probe (a long coil carrying an
alternating current) is carried out in order to simplify the presentation, for the first time, of a specific semi-analytical approach which will be in fine dedicated to the simulation of EC testing of conducting magnetic test pieces of complex shapes
without to resort to pure numerical methods.
Notes: paper JAE 869
Special Issue: Proceedings of the twelfth International Symposium on Interdisciplinary Electromagnetic, Mechanic and Biomedical Problems, ISEM Bad Gastein Published Online: 30 May 2007
Abstract: This paper presents an eddy current non-destructive evaluation (NDE) method to locate unique and multiple
discontinuities of plate conductive materials using an eddy current sensor array, made up from an emission coil and several reception coils. The procedure of signal post-processing is a variant of the 'maximum likelihood' super resolution method
