Publication:
Effect of laser shock peening on residual stress and fatigue life of clad 2024 aluminium sheet containing scribe defects

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dc.affiliation.dptoUC3M. Departamento de Bioingenieríaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Ingeniería Aeroespaciales
dc.contributor.authorDorman, M.
dc.contributor.authorToparli, M.B.
dc.contributor.authorSmyth, N.
dc.contributor.authorCini, Andrea
dc.contributor.authorFitzpatrick, M.E.
dc.contributor.authorIrving, P.E.
dc.date.accessioned2024-02-07T18:09:24Z
dc.date.available2024-02-07T18:09:24Z
dc.date.issued2012-06-30
dc.description.abstractLaser peening at a range of power densities has been applied to 2 mm-thick sheets of 2024 T351 aluminium. The induced residual stress field was measured using incremental hole drilling and synchrotron X-ray diffraction techniques. Fatigue samples were subjected to identical laser peening treatments followed by scribing at the peen location to introduce stress concentrations, after which they were fatigue tested. The residual stresses were found to be non-biaxial: orthogonal to the peen line they were tensile at the surface, moving into the desired compression with increased depth. Regions of peen spot overlap were associated with large compression strains; the centre of the peen spot remaining tensile. Fatigue lives showed moderate improvement over the life of unpeened samples for 50 mum deep scribes, and slight improvement for samples with 150 mum scribes. Use of the residual stress intensity Kresid approach to calculate fatigue life improvement arising from peening was unsuccessful at predicting the relative effects of the different peening treatments. Possible reasons for this are explored.en
dc.description.sponsorshipSynchrotron X-ray diffraction experiments were performed at the European synchrotron radiation facility, Grenoble, and we are grateful for the assistance of Dr Alex Evans on beam line ID31. Murat Acar is thanked for help with the experimental execution. Peening treatment was performed by MIC Ltd. MEF is supported by a grant through The Open University from The Lloyd's Register Educational Trust, an independent charity working to achieve advances in transportation, science, engineering and technology education, training and research worldwide for the benefit of all.en
dc.format.extent10
dc.identifier.bibliographicCitationDorman, M., Toparli, M.B., Smyth, N., Cini, A., Fitzpatrick, M., Irving, P. E.(2012). Effect of laser shock peening on residual stress and fatigue life of clad 2024 aluminium sheet containing scribe defects. Materials Science and Engineering: A (548), June (142-151). https://doi.org/10.1016/j.msea.2012.04.002en
dc.identifier.doihttps://doi.org/10.1016/j.msea.2012.04.002
dc.identifier.issn0921-5093
dc.identifier.publicationfirstpage142
dc.identifier.publicationissueJuneen
dc.identifier.publicationlastpage151
dc.identifier.publicationtitleMaterials Science and Engineering: Aen
dc.identifier.publicationvolume548
dc.identifier.urihttps://hdl.handle.net/10016/39948
dc.identifier.uxxiAR/0000026372
dc.language.isoengen
dc.publisherElsevieren
dc.rights© 2012 Elsevier B.V. All rights reserved.en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaAeronáuticaen
dc.subject.ecienciaBiología y Biomedicinaes
dc.subject.otherLaser peeningen
dc.subject.otherAluminium sheeten
dc.subject.otherFatigueen
dc.subject.otherResidual stressesen
dc.subject.otherCrack growthen
dc.titleEffect of laser shock peening on residual stress and fatigue life of clad 2024 aluminium sheet containing scribe defectsen
dc.typeresearch articleen
dc.type.hasVersionAMen
dspace.entity.typePublication
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