TriPhaHyb

Due to the selection, modification, and composition of different plastics and reinforcing fibers, fiber reinforced plastics (FRP) offer unique possibilities regarding the design of tailored and optimized component properties. It could be shown that, for example, the combination of steel fibers and classic reinforcing fibers within a hybrid FRP enabled the direction-dependent modification of mechanical and fracture-mechanical properties in a wider range. In particular, the energy absorption associated with failure depended, among many other properties, on the hybridization strategy used and the resulting microstructure of the material.

While previous investigations had mainly focused on the investigation of FRP hybridized on a single-layer level, this project focused on the manufacturing, characterization, and description of FRP hybridized at the yarn level. For this purpose, three-phase hybrid filament yarns were produced from glass, steel, and polypropylene filament yarns by the use of a modified air-texturing machine. These hybrid yarns were further processed into hybrid laminates using winding and press technologies. In order to characterize the influence of this new possibility of adjusting the material microstructure as well as the resulting consequences for the mechanical behavior, in addition to the experimental investigation, a detailed numerical material characterization was carried out using representative volume elements.

• Institut für Textilmaschinen und Textile Hochleistungswerkstofftechnik – ITM (Technische Universität Dresden)