Author(s)

Bikash Joadder, Jagabandhu Shit, Sanjib Acharyya, Sankar Dhar

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Failure cycles of notched round specimens under strain controlled cyclic loading are predicted using strain—life relations obtained from experiment for plain fatigue round specimens. For notched specimens, maximum strain occurs at notch root and is different from applied controlled strain. The maximum strain is computed by appropriate Finite element analysis using the FE software ABAQUS. FE model and material parameters are validated by comparing the FE results and experimental results of LCF tests of round specimens. This value of maximum strain is used for prediction of failure cycles. Prediction is compared with the experimental results. The results show good matching.

Strain Life Equation, Failure Cycle, Notched Specimen, LCF, Cyclic Plasticity

B. Joadder, J. Shit, S. Acharyya and S. Dhar, "Fatigue Failure of Notched Specimen—A Strain-Life Approach," Materials Sciences and Applications, Vol. 2 No. 12, 2011, pp. 1730-1740. doi: 10.4236/msa.2011.212231.