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Modification of the Murakami fatigue crack growth model for multiaxial loading: Application to tensile-dominated failure of small defects
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DOI：10.1016/j.tafmec.2026.105846.png)
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Abstract
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• Extension of the Murakami fatigue crack growth model to multiaxial loading. • A Walker-type parameter accounts for mean stress effects on small crack growth. • The model captures small crack growth behavior under nonproportional loading. • Tensile mechanisms dominate small crack growth from cylindrical defects in 1045 steel. • Satisfactory life predictions are achieved under diverse multiaxial stress states.
Keywords:
Defects
Small-crack growth
Multiaxial fatigue
Life prediction
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