Major Research Instrumentation for integration of efficient effects in multi-material structural components

• Subject Area: Materials Engineering
• Term: Funded in 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 445707542

The results of the research activities of the Institute of Product Development are methods and engineering environments for the design of additively manufactured functional components and additively manufactured structural components with locally adapted properties and integrated effects (e.g. damping, heat conduction or mass transfer). Existing manufacturing facilities (selective laser beam melting) at the institute allow as a design freedom a largely arbitrary contour, the targeted use of enclosed, non-melted powder material, as well as the adaptation of the beam melting process in the direction of the build process to adjust the mechanical component properties. The aim of this proposal is to enable further degrees of freedom with regard to a specifically adjusted porosity and thus density variation as well as multi-materiality and material grading. This is the necessary step to validate research results obtained e.g. from the projects RePARE and Innovative Heavy-Duty Diesel Combustion System Development and to create a basis for the development and expansion of the projects GROTESK, SAM graduate school and SFB 1153 Tailored Forming. Furthermore, the network of the applying partners (Institute of Product Development, Institute of Thermodynamics, Institute of Materials Science, Institute of Turbomachinery and Fluid Dynamics; all Leibniz Universität Hannover) will provide new starting points for interdisciplinary research, especially questions concerning e.g. recycling of unwelded powder, the characterization of the material transition zone, the holistic optimization of the components with regard to the effects to be achieved or the time behaviour (e.g. aging) of the manufactured components. The proposal is for a laser beam melting system with multi-material coater including periphery and the possibility of simultaneous operation of different laser sources. In order to be able to integrate future developments in the field of machine technology (e.g. novel multi-material coaters or laser concepts) into the device and thus to be able to work on long-term research projects, a modular device concept is favoured.

• DFG Programme: Major Research Instrumentation
• Major Instrumentation: Großgerät für die Innovative Integration Effizienter Effekte in Strukturbauteile
• Instrumentation Group: 5740 Laser in der Fertigung
• Applicant Institution: Gottfried Wilhelm Leibniz Universität Hannover
• Leader: Professor Dr.-Ing. Roland Lachmayer