A method to determine the resistivity, permeability and thickness of moving magnetic sheets is described. The parameters of a sample sheet inserted between two coils facing each other are determined by measuring the impedance of the two coils at two different frequencies. To compare the experimental data with theoretical values, the difference in the impedance of the coils between two cases is used: when the current passes through the coils in the same direction, and in opposite directions. The method was tested by measuring the resistivity, permeability and thickness of nickel and iron sheets, 1 mm thick, moving at velocities varying from 0 to 6 m/s. It was possible to accurately determine the resistivity, thickness, and permeability within 10%, 10%, and 20%, respectively, at frequencies of 400 and 800 Hz.
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机译：描述了确定运动磁性片的电阻率，磁导率和厚度的方法。通过在两个不同的频率下测量两个线圈的阻抗来确定插入在彼此面对的两个线圈之间的样品纸的参数。为了将实验数据与理论值进行比较，使用了两种情况下线圈阻抗的差异：当电流以相同方向和相反方向通过线圈时。通过测量厚度为1毫米，以0到6 m / s的速度移动的镍和铁板的电阻率，磁导率和厚度来测试该方法。在400和800 Hz的频率下，可以分别精确地确定电阻率，厚度和磁导率分别在10％，10％和20％之内。
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