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The effect of SLM parameters on geometrical characteristics of open porous NiTi scaffolds
KU Leuven, Belgium.
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2013 (Engelska)Ingår i: High Value Manufacturing: Advanced Research in Virtual and Rapid Prototyping - Proceedings of the 6th International Conference on Advanced Research and Rapid Prototyping, VR@P 2013, Leiria, Portugal: CRC Press , 2013, s. 309-314Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Selective Laser Melting (SLM) is a promising technique for the production of biometallic scaffolds for orthopaedic applications. To produce successful scaffolds, the laser parameters should be carefully selected in order to achieve open porosity especially when pores are <1000 μm. In this study, we investigate the effect of different laser parameters (capable to produce dense bulk NiTi samples) on production of scaffolds with open porosities of 1000 μm and varying strut thicknesses 100-300 μm. Two different sets of laser parameters were used: 40W laser power with 160 mm/s scanning velocity and 250W with 1000 mm/s, corresponding to low and high laser parameters respectively. Micro-CT scanning experiments were carried out to illustrate the limitations of laser parameters in production of open porous scaffolds. Volume fraction and closed porosity were assessed. It was found that a large CAD mismatch was observed in the building (XZ) direction and internal porosity appears within struts of the samples produced with high laser processing parameters. The residual particles on struts were also shown to increase as strut thickness increases.

Ort, förlag, år, upplaga, sidor
Leiria, Portugal: CRC Press , 2013. s. 309-314
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-251618ISI: 000337900800053Scopus ID: 2-s2.0-84892183120ISBN: 9781138001374 (tryckt)OAI: oai:DiVA.org:kth-251618DiVA, id: diva2:1316080
Konferens
6th International Conference on Advanced Research in Virtual and Physical Prototyping, VR@P 2013; Leira; Portugal; 1 October 2013 through 5 October 2013
Anmärkning

QC 20190628

Tillgänglig från: 2019-05-15 Skapad: 2019-05-15 Senast uppdaterad: 2019-08-21Bibliografiskt granskad

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Dadbakhsh, Sasan
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