Objective: Casted Programmable MaterialsWednesday (07.10.2020) 14:40 - 15:00
The future of materials is the combination of logic and material. Functionalities are written directly into the structure of the material and thus replace complete systems including sensors, actuators and power supplies. The research cluster of programmable materials (CPM) is characterized by the five core institutes - Fraunhofer IWM, IAP, IWU, IBP and ICT. They define the contextual alignment of the cluster via the core topics - programmable transport properties and mechanical programmable materials. As part of the focus topic “production and upscaling” we are dealing with the development of production methods for programmable materials to produce them at a reasonable price and use them in components.
One focus of the Fraunhofer IWU activities in that cluster is the research and development of realization processes for the developed structures in metal. Based upon investment casting and the experience of open cellular metal foam production, fine networks of single cells with programmable properties or functionalities emerge shaping new possibilities for applications. As the materials and complexity of these structures is on a very high level, special casting conditions apply that will be presented in that lecture. Supported by 3D-printing of wax master pattern it is one focus to downsize the geometry stepwise. The challenge is the creation by casting as well as the elimination of mold material after the casting. Influences of the mold materials, high casting and mold temperatures and high demands at the microstructure are only a few aspects taken care of to fulfill the requirements to realize the wanted functionalities.