Schumacher, Ralf
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Ralf
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Schumacher, Ralf
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- PublikationReduction of particles on SLM surfaces(2018) Zimmermann, Simon; Schumacher, Ralf; Bill, Oliver; Dalcanale, Federico; de Wild, Michael [in: Meet the Expert Conference]04 - Beitrag Sammelband oder Konferenzschrift
- PublikationPre-process calculation to optimize laser parameter in selective laser melting(2018) Matter, Nathalie; Schuler, Felix; Schumacher, Ralf; de Wild, Michael [in: SSB+RM Conference Abstracts,]04 - Beitrag Sammelband oder Konferenzschrift
- PublikationMechanical anisotropy of titanium scaffolds(De Gruyter, 2017) Weber, Franz E.; de Wild, Michael; Rüegg, Jasmine; Schumacher, Ralf [in: Current Directions in Biomedical Engineering]The clinical performance of an implant, e.g. for the treatment of large bone defects, depends on the implant material, anchorage, surface topography and chemistry, but also on the mechanical properties, like the stiffness. The latter can be adapted by the porosity. Whereas foams show isotropic mechanical properties, digitally modelled scaffolds can be designed with anisotropic behaviour. In this study, we designed and produced 3D scaffolds based on an orthogonal architecture and studied its angle-dependent stiffness. The aim was to produce scaffolds with different orientations of the microarchitecture by selective laser melting and compare the angle-specific mechanical behaviour with an in-silico simulation. The anisotropic characteristics of open-porous implants and technical limitations of the production process were studied.01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationPatient-specific hip prostheses designed by surgeons(De Gruyter, 30.09.2016) Coigny, Florian; Todor, Adrian; Rotaru, Horatiu; Schumacher, Ralf; Schkommodau, Erik [in: Current Directions in Biomedical Engineering]Patient-specific bone and joint replacement implants lead to better functional and aesthetic results than conventional methods [1], [2], [3]. But extracting 3D shape information from CT Data and designing individual implants is demanding and requires multiple surgeon-to-engineer interactions. For manufacturing purposes, Additive Manufacturing offers various advantages, especially for low volume manufacturing parts, such as patient specific implants. To ease these new approaches and to avoid surgeon-to-engineer interactions a new design software approach is needed which offers highly automated and user friendly planning steps.01A - Beitrag in wissenschaftlicher Zeitschrift
- Publikation3D Printing in Medicine: Yesterday – Today - Tomorrow(06/2016) Schumacher, Ralf06 - Präsentation
- PublikationDegradable Mg scaffolds produced by selective laser melting (P1035)(05/2016) Rüegg, Jasmine; Böhringer, Stephan; Kessler, Anja; Schumacher, Ralf; Schkommodau, Erik; de Wild, Michael06 - Präsentation
- PublikationSo profitiert die Medizintechnik vom 3D Druck(Springer, 27.01.2016) Moser, Silvio; Schumacher, Ralf [in: Produktion]01A - Beitrag in wissenschaftlicher Zeitschrift
- Publikation3D Printing in Medicine: Revolution or Illusion?(2016) Schumacher, Ralf06 - Präsentation
- PublikationQualifizierung des SLM-Prozesses zur Herstellung von Knochenimplantaten(2016) Schumacher, Ralf06 - Präsentation
- Publikation3D Printing and Medical Applications - an Overview(2016) Schumacher, Ralf06 - Präsentation