We numerically compute the impedance of the probe-coil as an eddy-current signal due to stress corrosion cracks (SCC) and/or fatigue cracks in the conductive an d nonmagnetic materials by using 3D finite element model. The fine shallow cracks with various structures are self-consistently simulated by providing zero-condu ctivity with a part of the background materials. We find the significant difference in the coil impedance, which crucially depends on the crack geometries. Our model and the obtained resu...
英字タイトル:
Impedance analysis of eddy current fields on inhomogeneous conductive mediumwith stress corrosion cracks