Measurements and semi-analytical modeling of incremental permeability using eddy current coil in the presence of magnetic hysteresis

摘要

The well known analytical solutions for standard eddy current problems have been applied to describe non-destructive testing (ndt) experiments on surface-hardened cast iron samples by measuring the incremental permeability. The agreement obtained between the measured and calculated incremental permeability profile curves allows the conclusion that measured curves can be reliably simulated and discussed in terms of the governing influencing parameters.