Deviations of the SLM produced Lattice Structures and Their Influence on Mechanical properties

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dc.contributor.authorVrána, Radekcs
dc.contributor.authorKoutecký, Tomášcs
dc.contributor.authorČervinek, Ondřejcs
dc.contributor.authorZikmund, Tomášcs
dc.contributor.authorPantělejev, Liborcs
dc.contributor.authorKaiser, Jozefcs
dc.contributor.authorKoutný, Danielcs
dc.coverage.issue9cs
dc.coverage.volume15cs
dc.date.accessioned2022-07-07T14:52:12Z
dc.date.available2022-07-07T14:52:12Z
dc.date.issued2022-04-26cs
dc.description.abstractSelective laser melting (SLM) is an additive manufacturing technology suitable for producing cellular lattice structures using fine metal powder and a laser beam. However, the shape and dimensional deviations occur on the thin struts during manufacturing, influencing the mechanical properties of the structure. There are attempts in the literature to describe the actual shape of the struts’ geometry, however, on a smaller data sample only, and there is a lack of a universal FEA material model applicable to a wider range of lattice structure diameters. To describe the actual dimensions of the struts, a set of lattice structures, with diameters ranging from 0.6 to 3.0 mm, were manufactured using SLM. These samples were digitized using micro-computed tomography (CT) and fully analyzed for shape and dimensions. The results show large deviations in diameters of inscribed and circumscribed cylinders, indicating an elliptical shape of the struts. With increasing lattice structure diameter, the deviations decreased. In terms of the effect of the shape and dimensions on the mechanical properties, the Gaussian cylinder was found to describe struts in the diameter range of 1.5 to 3.0 mm sufficiently well. For smaller diameters, it is appropriate to represent the actual cross-section by an ellipse. The use of substitute ellipses, in combination with the compression test results, has resulted in FEA material model that can be used for the 0.6 to 3.0 mm struts’ diameter range. The model has fixed Young’s and tangential modules for these diameters and is controlled only by the yield strength parameter (YST).en
dc.formattextcs
dc.format.extent1-20cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2022, vol. 15, issue 9, p. 1-20.en
dc.identifier.doi10.3390/ma15093144cs
dc.identifier.issn1996-1944cs
dc.identifier.other177801cs
dc.identifier.urihttp://hdl.handle.net/11012/204245
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttps://www.mdpi.com/1996-1944/15/9/3144cs
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.subjectselective laser melting (SLM)en
dc.subjectlattice structureen
dc.subjectshape and dimension analysisen
dc.subjectcomputed tomography (CT)en
dc.subjectdigitizationen
dc.subjectfinite element analysis (FEA)en
dc.titleDeviations of the SLM produced Lattice Structures and Their Influence on Mechanical propertiesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-177801en
sync.item.dbtypeVAVen
sync.item.insts2022.07.07 16:52:12en
sync.item.modts2022.07.07 16:14:32en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. NCK MESTEC - sekce konstruovánícs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Pokročilé instrumentace a metody pro charakterizace materiálůcs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav konstruovánícs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav materiálových věd a inženýrstvícs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav fyzikálního inženýrstvícs
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