Evolution of residual stresses with fatigue crack growth in integral structures with crack retarders

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dc.contributor.authorLiljedahl, CDMen_AU
dc.contributor.authorFitzpatrick, MEen_AU
dc.contributor.authorEdwards, Len_AU
dc.date.accessioned2010-04-07en_AU
dc.date.accessioned2010-04-30T05:09:16Zen_AU
dc.date.available2010-04-07en_AU
dc.date.available2010-04-30T05:09:16Zen_AU
dc.date.issued2009-10-15en_AU
dc.date.statistics2009-10-15en_AU
dc.description.abstractBonded straps are investigated for their ability to retard a growing fatigue crack in metallic structures. The evolution of the residual stresses in the vicinity of the strap with fatigue crack growth has been studied. Cracks were grown in single edge-notched tension (SEN(T)) specimens reinforced with either a titanium or a carbon fibre reinforced plastics (CFRP) strap. The residual stress evolution has been measured in situ during crack growth using neutron diffraction, and modelled with a finite element approach. The peak residual stresses induced by the mismatch of the coefficient of thermal expansion between the strap and plate materials were seen to be fairly constant with crack growth. Good correlation between the experimental and the modelling results was found, except at very long crack lengths for a specimen that exhibited considerable fracture surface roughness at long crack lengths. The difference was attributed to wedging of the fracture surface changing the expected stress state, rather than any effect of the strap. © 2009, Elsevier Ltd.en_AU
dc.identifier.citationLiljedahl, C. D. M., Fitzpatrick, M. E., & Edwards, L. (2009). Evolution of residual stresses with fatigue crack growth in integral structures with crack retarders. Materials Science and Engineering: A - Structural Materials Properties Microstructure and Processing, 523(1-2), 152-159. doi:10.1016/j.msea.2009.06.024en_AU
dc.identifier.govdoc1597en_AU
dc.identifier.issn0921-5093en_AU
dc.identifier.issue1-2en_AU
dc.identifier.journaltitleMaterials Science and Engineering: A - Structural Materials Properties Microstructure and Processingen_AU
dc.identifier.pagination152-159en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.msea.2009.06.024en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3074en_AU
dc.identifier.volume523en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectCrack propagationen_AU
dc.subjectFatigueen_AU
dc.subjectResidual stressesen_AU
dc.subjectThermal expansionen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectMetalsen_AU
dc.titleEvolution of residual stresses with fatigue crack growth in integral structures with crack retardersen_AU
dc.typeJournal Articleen_AU
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