Abstract
A procedure for nonproportional low-cycle fatigue life assessment is proposed for various metal alloys that differ in structure. It is based on the Pisarenko-Lebedev equivalent strain and a correcting function allowing for nonproportional loading effects such as additional hardening and life reduction in the case of nonproportional strain paths. The calculated results are compared to the experimental ones reported elsewhere for steels, titanium-, nickel-, and aluminum-based alloys. A good agreement between the results is observed for all the materials and strain paths studied. The accuracy of the calculations for nonproportional loading is found to be same as in the case of proportional loading.
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Translated from Problemy Prochnosti, No. 4, pp. 31–39, July–August, 2007.
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Shukaev, S.N., Panasovskii, K.V. & Gladskii, M.N. Fatigue life assessment for metal alloys under nonproportional low-cycle loading. Strength Mater 39, 358–364 (2007). https://doi.org/10.1007/s11223-007-0040-2
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DOI: https://doi.org/10.1007/s11223-007-0040-2