Abstract
The present work aims primarily to identify the normal magnetization curve based on the voltage linked to the eddy current in ferromagnetic steels. For this, a direct model was proposed and designed on the basis of the finite element method (FEM) for calculating the voltage using the eddy current approach and based on the Brauer model in order to determine the normal magnetization curve. Then, the values of the Brauer model coefficients for the material under study were determined by fitting the experimental data. These coefficients were then used to calculate the output voltage of a measuring coil using the eddy current system. The method thus developed was applied to the ferromagnetic material that is commercially known as the Carpenter Silicon Core Iron «A», 1066C Anneal. It is worth indicating that the calculated voltage was then introduced as an input datum in an iterative procedure using the simplex algorithm in order to determine the K parameters of the Brauer model. In addition, the inversion algorithm made it possible to plot the unknown normal magnetization curve for ferromagnetic steels using the output voltage of a specially designed measuring coil using the eddy current testing technique.
Published Version
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