Method for the pulsed eddy current(PEC) response to a specimen based on direct analysis of transient eddy currents and induced magnetic fields was presented.Based on the experimental verification,the PEC response to a ferromagnetic specimen of finite thickness was computed with numerical simulation method.The law of eddy current diffusion in specimen was studied,and thus the PEC response was divided into two stages.The relation between the response and resistivity or permeability of the specimen was obtaine...