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Abstract

The magnetic leakage fields are investigated experimentally on rectangular-slit flaw models for various magnetizing fields H 0 . It is shown that in certain cases the flaw parameters can be incorrectly classified as a result of coincidence of their leakage fields. This is associated with both the choice of the magnetizing fields H 0 and the effect of the flaw width on the dependence of the flaw field on H 0 : for wide flaws this dependence is close to a linear function, whereas for narrow flaws the dependence tends to the magnetization curve of the sample.