Estimation of the Plastic Zone in Fatigue via Micro-Indentation

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dc.contributor.authorLopez-Crespo, Cristinacs
dc.contributor.authorCruces, Alejandrocs
dc.contributor.authorSeitl, Stanislavcs
dc.contributor.authorMORENO MORALES, MARIA BELENcs
dc.contributor.authorLopéz-Crespo, Pablocs
dc.coverage.issue19cs
dc.coverage.volume14cs
dc.date.accessioned2022-03-23T11:54:45Z
dc.date.available2022-03-23T11:54:45Z
dc.date.issued2021-10-08cs
dc.description.abstractAccurate knowledge of the plastic zone of fatigue cracks is a very direct and effective way to quantify the damage of components subjected to cyclic loads. In this work, we propose an ultra-fine experimental characterisation of the plastic zone based on Vickers micro-indentations. The methodology is applied to different compact tension (CT) specimens made of aluminium alloy 2024-T351 subjected to increasing stress intensity factors. The experimental work and sensitivity analysis showed that polishing the surface to #3 mu m surface finish and applying a 25 g-force load for 15 s produced the best results in terms of resolution and quality of the data. The methodology allowed the size and shape of both the cyclic and the monotonic plastic zones to be visualised through 2D contour maps. Comparison with Westergaard's analytical model indicates that the methodology, in general, overestimates the plastic zone. Comparison with S355 low carbon steel suggests that the methodology works best for alloys exhibiting a high strain hardening ratio.en
dc.formattextcs
dc.format.extent1-14cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2021, vol. 14, issue 19, p. 1-14.en
dc.identifier.doi10.3390/ma14195885cs
dc.identifier.issn1996-1944cs
dc.identifier.other176283cs
dc.identifier.urihttp://hdl.handle.net/11012/204034
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttps://www.mdpi.com/1996-1944/14/19/5885cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1996-1944/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectplastic zone in fatigue cracksen
dc.subjectfatigue of materialsen
dc.subjectmicro-indentationen
dc.titleEstimation of the Plastic Zone in Fatigue via Micro-Indentationen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-176283en
sync.item.dbtypeVAVen
sync.item.insts2022.03.23 12:54:44en
sync.item.modts2022.03.23 12:15:20en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav stavební mechanikycs
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