I am working on a 2D eddy current detector model using a permanent magnet and sensing coil. The magnet is set up using the material properties of an N52 magnet. The magnet and coil move along an aluminum sample that has various defects. The induced voltage on the sensing coil is has a nonreal offset at the start of the simulation.
The magnetic profile seems to change depending on the defect present in the aluminum:
Any help regarding why the field changes with the same material properties would be helpful, thanks!
Also, why does the sensing coil have an offset induced voltage?
Example of induced voltage initial offset: