Numerical simulation of the spatial distribution of the magnetic field and the flux in twolayer objects is executed. The possibility of measuring the depth of a high-coercive layer on a magnetically soft core by the value of the magnetic field measured on the surface of the object in the interpolar space of a U-shaped electromagnet is theoretically and experimentally shown. testing, 1984, vol. 20, iss. 8, pp. 495-501. 9.Mikheev M.N., Bida G.V., Kostin V.N., Mikhailova A.A., Kayukova T.N. Inspection of the depth and hardness of hardened layers after HF heating on crankshaft journals for motor cars.

Abstract. Numerical simulation of the spatial distribution of the magnetic field and the flux in two-layer objects is executed. The possibility of measuring the depth of a highly coercive layer on a soft magnetic core by the magnetic field measured on the surface of the object in the interpolar space of a U-shaped electromagnet is theoretically and experimentally shown.