Effect of a variation in material properties on the crack tip opening displacement

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dc.contributor.authorCodrington, J.
dc.contributor.authorKotooussov, A.
dc.contributor.authorChang, D.
dc.date.issued2012
dc.description.abstractThis paper investigates the effect of a variation in material properties on the crack tip opening displacement, a parameter often used in the prediction of fatigue and fracture. This situation is typical when a component is subjected to a relatively slow temperature fluctuation or the material properties undergo direct changes, such as due to a phase transformation. An analytical strip-yield model is developed using the small-scale yielding assumption and theory of complex potentials. Four cases of crack tip plasticity behaviour are identified for the different combinations of parameters controlling the variation in material properties. Results of calculations over a wide range of material properties are presented and show a significant effect on the crack tip opening displacement. Finite element simulations are conducted to verify the analytical findings. The implications of the outcomes in relation to several practical situations are also discussed.
dc.description.statementofresponsibilityJ. Codrington, A. Kotousov And D. Chang
dc.identifier.citationFatigue and Fracture of Engineering Materials and Structures, 2012; 35(10):943-952
dc.identifier.doi10.1111/j.1460-2695.2012.01681.x
dc.identifier.issn8756-758X
dc.identifier.issn1460-2695
dc.identifier.orcidKotooussov, A. [0000-0001-9337-5095]
dc.identifier.urihttp://hdl.handle.net/2440/74900
dc.language.isoen
dc.publisherBlackwell Science Ltd
dc.rights© 2012 Wiley Publishing Ltd.
dc.source.urihttps://doi.org/10.1111/j.1460-2695.2012.01681.x
dc.subjectcrack tip opening displacement
dc.subjectcrack tip plasticity
dc.subjectmaterial properties
dc.subjectsmall-scale plasticity
dc.subjectstrip-yield model
dc.titleEffect of a variation in material properties on the crack tip opening displacement
dc.typeJournal article
pubs.publication-statusPublished

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