Effect of plastic deformation on compliance curve based crack closure measurement

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dc.contributor.authorMohin, M.
dc.contributor.authorXu, Yigeng
dc.contributor.authorLewis, A.
dc.contributor.authorChrysanthou, A.
dc.date.accessioned2016-12-07T10:32:02Z
dc.date.available2016-12-07T10:32:02Z
dc.date.issued2016-09-30
dc.description.abstractFatigue crack growth depends heavily on near tip stress-strain behavior controlled by many micromechanical and microstructural factors. Crack closure is widely used to rationalize crack growth behaviour under complex loading conditions. Reliable crack closure measurement is essential for enhanced damage tolerance design and remains a challenge to the industry. This paper focuses on the effect of plastic deformation ahead of a notch/crack on the non-linearity of compliance curves of 6082-T651 aluminium alloy specimens to highlight a potential issue in the conventional compliance curve based crack closure measurement technique. Experimental and numerical simulation results demonstrate that plastic deformation ahead of the notch will introduce non-linear stress-strain behavior in the absence of crack closure. It is proposed that the effect of crack tip plasticity on the non-linearity of the compliance curve be separated to obtain reliable crack closure measurement.en_UK
dc.identifier.citationM.A. Mohin, Y.G. Xu, A. Lewis, A. Chrysanthou, Effect of plastic deformation on compliance curve based crack closure measurement, Key Engineering Materials, Vol. 713, pp.240 - 243, 2016en_UK
dc.identifier.issn1013-9826
dc.identifier.urihttp://dx.doi.org/10.4028/www.scientific.net/KEM.713.240
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/11098
dc.language.isoenen_UK
dc.publisherTrans Tech Publicationsen_UK
dc.rightsPublished by Trans Tech Publications. This is the Author Accepted Manuscript. This article may be used for personal use only. The final published version (version of record) is available online at 10.4028/www.scientific.net/KEM.713.240. Please refer to any applicable publisher terms of use.
dc.subjectCompliance curveen_UK
dc.subjectCrack closureen_UK
dc.subjectDamage tolerance designen_UK
dc.titleEffect of plastic deformation on compliance curve based crack closure measurementen_UK
dc.typeArticleen_UK

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