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dc.creatorRuiz de Galarreta-Moriones, S.(Sergio)-
dc.creatorDoyle, R.J. (Ruben J.)-
dc.creatorJeffers, J. (Jonathan)-
dc.creatorGhouse, S. (Shaaz)-
dc.identifier.citationRuiz de Galarreta-Moriones, S.(Sergio); Doyle, R.J. (Ruben J.); Jeffers, J. (Jonathan); et al. "Laser powder bed fusion of porous graded structures: a comparison between computational and experimental analysis". Journal of the Mechanical Behavior of Biomedical Materials. 123, 2021,es
dc.description.abstractFunctionally graded porous structures (FGPSs) are gaining interest in the biomedical sector, specifically for orthopaedic implants. In this study, the compressive behaviour of seven different FGPSs comprised of Face Centred Cubic (FCC) and the Octet truss unit cells (OCT) were analysed. The porosity of the structures were graded in different directions (radially, longitudinally, laterally and longitudinally & radially) by varying the strut diameters or by combining the two types of unit cells. The structures were manufactured by laser power bed fusion and compression tests were performed. Radially and laterally porous graded structures were found to outperform uniform porous structures with an increase in stiffness of 13.7% and 21.1% respectively. The experimental and finite element analysis (FEA) results were in good agreement with differences in elastic modulus of 9.4% and yield strength of 15.8%. A new FEA beam model is proposed in this study to analyse this type of structures with accurate results and the consequent reduction of computational time. The accuracy of the Kelvin-Voight model and the rule of mixtures for predicting the mechanical behaviour of different FGPSs was also investigated. The results demonstrate the adequacy of the analytical models specifically for hybrid structures and for structures with smooth diameter transitions.es_ES
dc.description.sponsorshipFinancial support of this study was provided by the Engineering and Physical Sciences Research Council (EP/R042721/1) and the Wellcome Trust (208858/Z/17/Z). The authors gratefully acknowledge their supportes_ES
dc.subjectPorous structureses_ES
dc.subjectFunctionally gradedes_ES
dc.subjectFinite element analysises_ES
dc.subjectMechanical testinges_ES
dc.subjectAdditive manufacturinges_ES
dc.titleLaser powder bed fusion of porous graded structures: a comparison between computational and experimental analysises_ES
dc.editorial.noteThis is an open access article under the CC BY-NC-ND licensees_ES
dadun.citation.publicationNameJournal of the Mechanical Behavior of Biomedical Materialses_ES

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