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Microplastic Limit of Steel Determined by the Measurement of Changes in Electrical Impedance

ASEP 2011
L. (Lubomír) Gajdoš, M. (Martin) Šperl, J. Kaiser, V. Mentl

Summary

This study determines the microplastic limit of steel by measuring changes in electrical impedance, finding that it falls below the fatigue limit and separates non-damaging from damaging cyclic stresses.

The microplastic limit was determined by evaluation of deltaR-Sigma records. A comparison with the fatigue limit in an axial reversed loading showed that it was below the fatigue limit. The microplastic limit can be considered to separate non-damaging and damaging cyclic stresses.

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