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WEB Interface characterization by experimental and numerical single-fiber push-out test

Thursday (24.09.2020)
11:35 - 11:50 C: Characterization 1
Part of:

Fiber reinforced polymers (FRP) due their low specific density and high strength possess a high potential for light weight construction. On the microstructural level FRP consist of fibers, the matrix and an intermediate interface. A better understanding of the fiber-matrix interface is needed to better assess overall component behaviour, to improve simulation methods and to tailor the interface and its properties.
The fiber-matrix interface is investigated experimentally and numerically by a single-fiber push-out test. The investigated material is a glass-fiber reinforced sheet-molding-compound (SMC). The experimentally determined microstructure is re-built in a FEM-simulation model. Interface parameters of a cohesive zone model are adapted to the experimental observation.
The single-fiber push-out test has the advantage that the interface can be investigated directly on the material from a component. Furthermore, the influence of surrounding fibers can be taken into account. This latter aspect is particularly important in the bundle-like microstructure of SMC.

Additional Authors:
  • Prof. Dr. Peter Gumbsch
    Karlsruhe Institute of Technology (KIT)
  • Dr. Jörg Hohe
    Fraunhofer-Institute for Mechanics of Materials IWM