Mechanical properties and in situ deformation imaging of microlattices manufactured by laser based powder bed fusion

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dc.contributor.authorDu Plessis, Antonen_ZA
dc.contributor.authorKouprianoff, Dean-Paulen_ZA
dc.contributor.authorYadroitsava, Inaen_ZA
dc.contributor.authorYadroitsev, Igoren_ZA
dc.date.accessioned2019-10-17T06:56:54Z
dc.date.available2019-10-17T06:56:54Z
dc.date.issued2019-09-09
dc.descriptionCITATION: Du Plessis, A., et al. 2018. Mechanical properties and in situ deformation imaging of microlattices manufactured by laser based powder bed fusion. Materials, 11(9):1663, doi:10.3390/ma11091663.
dc.descriptionThe original publication is available at https://www.mdpi.com
dc.description.abstractENGLISH ABSTRACT: This paper reports on the production and mechanical properties of Ti6Al4V microlattice structures with strut thickness nearing the single-track width of the laser-based powder bed fusion (LPBF) system used. Besides providing new information on the mechanical properties and manufacturability of such thin-strut lattices, this paper also reports on the in situ deformation imaging of microlattice structures with six unit cells in every direction. LPBF lattices are of interest for medical implants due to the possibility of creating structures with an elastic modulus close to that of the bones and small pore sizes that allow effective osseointegration. In this work, four different cubes were produced using laser powder bed fusion and subsequently analyzed using microCT, compression testing, and one selected lattice was subjected to in situ microCT imaging during compression. The in situ imaging was performed at four steps during yielding. The results indicate that mechanical performance (elastic modulus and strength) correlate well with actual density and that this performance is remarkably good despite the high roughness and irregularity of the struts at this scale. In situ yielding is visually illustrated.en_ZA
dc.description.urihttps://www.mdpi.com/1996-1944/11/9/1663
dc.description.versionPublisher's version
dc.format.extent10 pages : illustrationsen_ZA
dc.identifier.citationDu Plessis, A., et al. 2018. Mechanical properties and in situ deformation imaging of microlattices manufactured by laser based powder bed fusion. Materials, 11(9):1663, doi:10.3390/ma11091663
dc.identifier.issn1996-1944 (online)
dc.identifier.otherdoi:10.3390/ma11091663
dc.identifier.urihttp://hdl.handle.net/10019.1/106657
dc.language.isoen_ZAen_ZA
dc.publisherMDPIen_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.subjectAdditive manufacturingen_ZA
dc.subjectMaterials -- Mechanical propertiesen_ZA
dc.subjectLaser materialsen_ZA
dc.titleMechanical properties and in situ deformation imaging of microlattices manufactured by laser based powder bed fusionen_ZA
dc.typeArticleen_ZA
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