Analytical fatigue life formulation for notches informed by crystal plasticity

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dc.contributor.authorAshraf, Farhan
dc.contributor.authorCini, Andrea
dc.contributor.authorCastelluccio, Gustavo M.
dc.date.accessioned2022-06-28T08:51:28Z
dc.date.available2022-06-28T08:51:28Z
dc.date.issued2022-06-17
dc.description.abstractDamage from small manufacturing defects often go unnoticed until fatigue cracks have grown beyond repairability. These cracks initiate at defects with dimensions on par with the microstructure length scale (e.g., 5–200 µm deep), which affects fatigue variability and renders most engineering prognosis methods inapplicable. This work develops a novel microstructure-sensitive formulation that reduces computational efforts by decoupling geometric and microstructural contributions to fatigue cracking. Crystal plasticity finite element models with and without geometry induced strain gradients were considered to assess the role of defects independently from the microstructure. The analysis results in a fatigue life analytical formulation whose parameters depend on the microstructure and defect morphology.en_UK
dc.identifier.citationAshraf F, Cini A, Castelluccio GM. (2022) Analytical fatigue life formulation for notches informed by crystal plasticity, International Journal of Fatigue, Volume 163, October 2022, Article number 107072en_UK
dc.identifier.issn0142-1123
dc.identifier.urihttps://doi.org/10.1016/j.ijfatigue.2022.107072
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/18097
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectSmall cracksen_UK
dc.subjectCrystal plasticityen_UK
dc.subjectMicrostructureen_UK
dc.subjectScribe marksen_UK
dc.subjectMicromechanical notchesen_UK
dc.titleAnalytical fatigue life formulation for notches informed by crystal plasticityen_UK
dc.typeArticleen_UK

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