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Influence of Milling and Abrasive Waterjet Cutting on the Fatigue Behaviour of DP600 Steel Sheet

2014Journal article Restricted access
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dc.contributor.authorDuarte, Pedro
dc.contributor.authorInfante, Virgínia
dc.contributor.authorFreitas, Manuel de
dc.date.accessioned2024-09-17T11:35:31Z
dc.date.available2024-09-17T11:35:31Z
dc.date.issued2014
dc.description.abstractThe observation of cracks in mechanical parts shows that cracks often initiate on cutting edges. A lot of effort has been done to developing theories to predict fatigue behaviour of welds. However for the cut-edges available data is very scarce on the fatigue behaviour. This paper presents the results obtained in fatigue tests on DP600 dual-phase steel sheet specimens, under three types of cutting edges processes: milling with two cutting parameters and abrasive waterjet cutting. The tests were carried out using smooth specimens (Kt=1)and with a fatigue constant amplitude loading with R=0.1. Surface roughness and residual stresses induced by these different cutting conditions were measured and analysed. It was found that the fatigue strength of the abrasive waterjet cutting specimens was smaller than the predicted fatigue strength of the milling specimens and these may be attributed to the surface roughness induced by the cutting process. Finally failure mechanisms were studied with the scanning electron microscope (SEM) at fracture surfaces, including the identification of the fatigue crack initiation region. It was also observed that fatigue crack initiation takes place on the cut-edges.pt_PT
dc.description.versionN/Apt_PT
dc.identifier.citationDuarte, P., Infante, V., & de Freitas, M. (2014). Influence of Milling and Abrasive Waterjet Cutting on the Fatigue Behaviour of DP600 Steel Sheet. In Advanced Materials Research (Vols. 891–892, pp. 1761–1766). Trans Tech Publications, Ltd.pt_PT
dc.identifier.doihttps://doi.org/10.4028/www.scientific.net/AMR.891-892.1761pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.26/52081
dc.language.isoengpt_PT
dc.publisherTrans Tech Publications Ltdpt_PT
dc.subjectAbrasive Waterjet Cuttingpt_PT
dc.subjectDP600pt_PT
dc.subjectFatiguept_PT
dc.subjectMillingpt_PT
dc.subjectResidual Stresspt_PT
dc.subjectRoughnesspt_PT
dc.titleInfluence of Milling and Abrasive Waterjet Cutting on the Fatigue Behaviour of DP600 Steel Sheetpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1766pt_PT
oaire.citation.issue2pt_PT
oaire.citation.startPage1761pt_PT
oaire.citation.titleAdvanced Materials Researchpt_PT
oaire.citation.volume891-892pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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