A model of a device for nondestructive control by eddy currents has been proposed. The device and the object under control are represented by an equivalent circuit in the form of an electromagnetic circuit described by the system of differential finite equations in the coordinates of loop magnetic fluxes and currents of windings. The model allows us to take into account three parameters of the defects: depth, width, and conductivity. The spline method of analysis of periodic processes is used to carry out calculation.
- V. Muzhytskyy, A. Byzyulev, R. Zahydulyn, „Eddy current defectoscope VD-12NFP and methods of processing the measured signal from the defect“, Defectoscopiya, no.5, pp. 85-91, 2004. (Russian)
- V. Perkhach, T. Shelepeten, V. Horyachko, “Digital quasi etalon model electromagnetic devices// Mathematical modeling of electrical engineering, electronics and power”, in Proc. 3rd International Conference on Matematychne modeliuvannia v elektrotekhnitsi, elektronitsi ta energetytsi, pp.208-209, Lviv, Ukraine: Lviv Polytechnic National University, 1999. (Ukrainian)
- V. S. Cecco, G.van Drunen, F. L. Sharp, Manual on eddy current method, Chalk River, ON: Canada, 1981.
- V. Malyar, “The main provisions of the spline method of calculating periodic modes of operation of electrical circuits”, Elektronika i svyaz, no. 5, pp. 11-14, 1998. (Russian)