Comparative study between FEA, trepanning and neutron strain diffraction on residual stresses in flash-butt welded rails

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dc.contributor.authorTawfik, Den_AU
dc.contributor.authorMutton, PJen_AU
dc.contributor.authorKirstein, Oen_AU
dc.contributor.authorChiu, WKen_AU
dc.date.accessioned2009-09-30T01:17:41Zen_AU
dc.date.accessioned2010-04-30T05:06:17Zen_AU
dc.date.available2009-09-30T01:17:41Zen_AU
dc.date.available2010-04-30T05:06:17Zen_AU
dc.date.issued2007-06en_AU
dc.date.statistics2007-06en_AU
dc.description.abstractThis paper compares three independent methods for deriving the residual stresses distribution in AS60 normal cooled flash-butt welded rail. A numerical technique utilised a sequentially coupled thermo-mechanical analysis with representative temperature dependent and phase transformation properties of the rail steel. The numerical model also incorporated an element removal regime to assess the effect of stress relaxation when slicing a plate section from a welded rail section for neutron stress mapping. Two experimental techniques were used to quantify the magnitude of residual stresses in the weld; these were strain gauging and trepanning, and neutron diffraction (ND). The results showed satisfactory correlation between the residual stress distribution obtained from the numerical analysis and the strain gauge/trepanning data and ND stress mapping, respectively. The ND and numerical analysis both confirmed that the tensile residual stresses in both vertical and longitudinal directions are concentrated in the web region, despite a significant relaxation as a result of the sectioning method used to obtain the plate section for neutron stress mapping. © 2007, Taylor & Francis Ltd.en_AU
dc.identifier.citationTawfik, D., Mutton, P. J., Kirstein, O., & Chiu, W. K. (2007). Comparative study between FEA, trepanning and neutron strain diffraction on residual stresses in flash-butt welded rails. Journal of Neutron Research, 15(3-4), 199-205. doi:10.1080/10238160802399670en_AU
dc.identifier.govdoc1403en_AU
dc.identifier.issn1023-8166en_AU
dc.identifier.issue3-4en_AU
dc.identifier.journaltitleJournal of Neutron Researchen_AU
dc.identifier.pagination199-205en_AU
dc.identifier.urihttp://dx.doi.org/10.1080/10238160802399670en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1874en_AU
dc.identifier.volume15en_AU
dc.language.isoenen_AU
dc.publisherTaylor & Francisen_AU
dc.subjectResidual stressesen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectWelded jointsen_AU
dc.subjectStrainsen_AU
dc.subjectRelaxationen_AU
dc.subjectMappingen_AU
dc.titleComparative study between FEA, trepanning and neutron strain diffraction on residual stresses in flash-butt welded railsen_AU
dc.typeJournal Articleen_AU
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