Cyclic Elasto-Plastic Fracture Diagram and Some Parameters of Cyclic Crack Growth Resistance for the Plastic Steels

L. A. Sosnovskiy¹, A. V. Bogdanovich^2*, S. S. Sherbakov²

¹S&P Group “TRIBO-FATIGUE”, Gomel, Belarus.
²Department of Theoretical and Applied Mechanics, Belarusian State University, Minsk, Belarus.

DOI: 10.4236/wjm.2015.55009                

Abstract

Method of calculation and experimental estimation of crack growth resistance under cyclic elastoplastic deformation is proposed. This method is based on measuring of local plastic strain near the crack tip and plotting the cyclic elasto-plastic fracture diagram for a specimen with a crack. Analysis of two types of the cyclic elasto-plastic fracture diagrams and their parameters is made. Ex-perimental D-diagrams of cyclic elasto-plastic fracture for the plastic carbon steel are given.

Keywords

Crack Growth Resistance, Elasto-Plastic Deformation, Compact Specimen, Plastic Steel, Stress Intensity Factor, Contraction

Conflicts of Interest

The authors declare no conflicts of interest.

References

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