Abstract
The paper presents the results of laboratory studies of structural steels. The possibility of application of complex parameters obtained on the basis of harmonic components of magnetic hysteresis loop for practical estimation of steel time resistance is shown. Determination of the value of the complex parameter is carried out by means of the method of separation of diagnoses in the feature space and the method of group accounting of arguments. Registration of magnetic hysteresis loops is carried out by means of magnetic structuroscope DIUS-1.15M. The weight coefficients of the influence of harmonic components on the value of the complex parameter were determined. The results of the study demonstrate the possibility of satisfactory estimation of the strength of steel by the value of the complex parameter.
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