The mathematical model of the magnetoelastic acoustic emission (MAE) signal in the form of a random pulse flow is proposed and substantiated. The pulse and time characteristics of the MAE signal are highlighted. Using the results of the experiment by the MAE method of plate ferromagnetic steel samples an estimation of a number of parameters of the MAE signal is made. As a result, the dependences of the sum of the amplitudes and the final account of the signal from the set threshold for different loads are obtained. The dependence of the final account on the set threshold for the various values of the exponent attached to the sample is approximated. The dependence of the attenuation coefficient of the approximating exponent on the magnitude of the applied to the load sample, which is proposed to be used as a calibration in diagnosing residual stresses in ferromagnetic objects, is constructed.

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