Method and software for eddy currents NDE analysis

Authors calculated of the induced impedance change for eddy current test problems proposed WF CNDE. The mathematical model is based on volume integral equations for electromagnetic field sources. To reach a required accuracy the formula concerning difference field sources was used. This formula allows dedicating influence of flaws to impedance change. The difference method allows dividing an initial problem on field calculation in a flawless area and the task of magnetic field calculation for defects. (Author)