CHARACTERIZATION OF THE FRACTURE MECHANICAL BEHAVIOR OF C-SMC MATERIALS

Authors

  • Martin Tiefenthaler Institute of Polymer Product Engineering, Johannes Kepler Universität, Altenbergerstraße 69, Linz, Austria
  • Philipp S. Stelzer Institute of Polymer Product Engineering, Johannes Kepler Universität, Altenbergerstraße 69, Linz, Austria
  • Chi N. Chung Institute of Polymer Product Engineering, Johannes Kepler Universität, Altenbergerstraße 69, Linz, Austria
  • Volker Reisecker Transfercenter für Kunststofftechnik GmbH, Wels, Austria
  • Zoltan Major Institute of Polymer Product Engineering, Johannes Kepler Universität, Altenbergerstraße 69, Linz, Austria

DOI:

https://doi.org/10.14311/APP.2018.18.0001

Keywords:

C-SMC, Carbon Fiber Composites, Fracture Mechanics, Anisotropy

Abstract

The fracture mechanics of random discontinuous Carbon Fiber Sheet Molding Compound (C-SMC) materials compared to traditional carbon fiber composites are not well understood. An experimental study was carried out to characterize the fracture behavior of such C-SMC materials. Mode I tests, using double cantilever beam specimens, and mode II tests, adopting the four-point bend, end-notched flexure configuration, were performed. Results show high variations in the forcedeflection responses and scatter in the fracture toughness properties GIc and GIIc, due to the complex mesostructure defined by random oriented carbon fiber chips. To investigate the influence of the mesostructure, tensile tests with varying specimen width and thickness were assessed by stochastic measures to find the representative specimen size.

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Published

2018-10-23

Issue

Vol. 18 (2018): 16th YOUTH SYMPOSIUM ON EXPERIMENTAL SOLID MECHANICS

Section

Articles

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