Re: edge effects This is a common problem in Eddy current testing. One of the general way to model this problem is to use finite element method. A 2D axial simulation or a 3D simulation is doable now for this problem. If you want to obtain theoretical solution, (like an integral solution for a coil over an infinite plate) for this problem, it is very challenging. Up to now, I dont think any publications on this project are available for the edge effects. People normally are trying to avoid it. If a coil with a magnetic shielding, the edge effect can be minimized. Hope this helps.  Start Original Message  : I'm interesting in the problem of modelling the variation of the impedance of a probing coil when the sample placed in front of it (at a generic liftoff distance h) has the same dimensions of the coil. do you know any pubblication on this subject. Could anyone help me?  End Original Message 
