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Cyclic Elasto-Plastic Fracture Diagram and Some Parameters of Cyclic Crack Growth Resistance for the Plastic Steels
S&P Group “TRIBO-FATIGUE”, Gomel, Belarus
Department of Theoretical and Applied Mechanics, Belarusian State University, Minsk, Belarus
Department of Theoretical and Applied Mechanics, Belarusian State University, Minsk, Belarus
- 1 S&P Group “TRIBO-FATIGUE”, Gomel, Belarus
- 2 Department of Theoretical and Applied Mechanics, Belarusian State University, Minsk, Belarus
- 3 Department of Theoretical and Applied Mechanics, Belarusian State University, Minsk, Belarus
World Journal of Mechanics·Volume 05 (2015)·Pages 80–85·Published 13 May 2015·DOI10.4236/wjm.2015.55009
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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.
KeywordsCrack Growth ResistanceElasto-Plastic DeformationCompact SpecimenPlastic SteelStress Intensity FactorContraction
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