Schumacher, Ralf
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Reduction of particles on SLM surfaces
2018, Zimmermann, Simon, Schumacher, Ralf, Bill, Oliver, Dalcanale, Federico, de Wild, Michael
Patient-specific hip prostheses designed by surgeons
2016-09-30, Coigny, Florian, Todor, Adrian, Rotaru, Horatiu, Schumacher, Ralf, Schkommodau, Erik
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.
So profitiert die Medizintechnik vom 3D Druck
2016-01-27, Moser, Silvio, Schumacher, Ralf
Pre-process calculation to optimize laser parameter in selective laser melting
2018, Matter, Nathalie, Schuler, Felix, Schumacher, Ralf, de Wild, Michael
Mechanical anisotropy of titanium scaffolds
2017, Weber, Franz E., de Wild, Michael, Rüegg, Jasmine, Schumacher, Ralf
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.
Degradable Mg scaffolds produced by selective laser melting (P1035)
2016-05, Rüegg, Jasmine, Böhringer, Stephan, Kessler, Anja, Schumacher, Ralf, Schkommodau, Erik, de Wild, Michael
Qualifizierung des SLM-Prozesses zur Herstellung von Knochenimplantaten
2016, Schumacher, Ralf