#6819. Prediction model for initiation in cracked component under very low cycle fatigue

December 2026publication date
Proposal available till 26-05-2025
4 total number of authors per manuscript0 $

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Journal’s subject area:
Applied Mathematics;
Mechanical Engineering;
Condensed Matter Physics;
Materials Science (all);
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Abstract:
In this paper, a model is proposed to predict the initiation cycle of a cracked component under very low cycle fatigue. The prediction model is based on the simple assumption that mechanism of crack initiation in a cracked component under very low cycle fatigue loading is the same as that under monotonic loading, and is given in terms of the plastic component of monotonic J and cyclic ?J. For validation, predicted cycles are compared with displacement-controlled cyclic C(T) test data with two load ratios and load-controlled C(T) test data with two amplitudes. The predicted cycles based on 0.2 mm crack growth are similar in all cases.
Keywords:
Compact tension specimen; Cyclic ?J integral; Initiation of crack growth; Monotonic fracture toughness; Very low cycle fatigue loading

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