Abstract
This paper focuses on the modeling of fatigue lives of L-shaped cracks obtained by unusual crack tests performed in plates first loaded under tensile loads and then under out-of-plane pure bending loads. To ensure life predictions accuracy, the paper compares two different methodologies. The first uses three points from the measured crack fronts and the corresponding stress intensity factors obtained by numerical simulations. The fatigue crack front is assumed to advance during growth in each point in the normal direction. Fatigue lives are calculated for each one of the three paths. The second methodology uses only one point of the crack front on the bottom surface of the plate to evaluate fatigue life. The results of fatigue life from both approaches are compared and discussed.
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Acknowledgements
The first author would like to thank the Brazilian National Council for Scientific and Technological Development (CNPq) for the financial support.
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Corbani, S., Martha, L.F., de Castro, J.T.P., Carter, B. (2019). Fatigue Life Predictions for L-Shaped Cracks. In: Abdel Wahab, M. (eds) Proceedings of the 7th International Conference on Fracture Fatigue and Wear. FFW 2018. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-0411-8_42
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DOI: https://doi.org/10.1007/978-981-13-0411-8_42
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