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Mechanical characterization of a short fiber-reinforced polymer at room temperature: experimental setups evaluated by an optical measurement system

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Abstract

Composite materials are of great interest for industrial applications because of their outstanding properties. Each composite material has its own characteristics due to the large number of possible combinations of matrix and filler. As a result of their compounding, composites usually show a complex material behavior. This work is focused on the experimental testing of a short fiber-reinforced thermoplastic composite at room temperature. The characteristic behavior of this material class is often based on a superposition of typical material effects. The predicted characteristic material properties such as elasto-plasticity, damage and anisotropy of the investigated material are obtained from results of cyclic uniaxial tensile tests at constant strain rate. Concerning the manufacturing process as well as industrial applications, the experimental investigations are extended to multiaxial loading situations. Therefore, the composite material is examined with a setup close to a deep-drawing process, the Nakajima test (Nakazima et al. in Study on the formability of steel sheets. Yawate Technical Report No. 264, pp 8517–8530, 1968). The evaluation of the experimental investigations is provided by an optical analysis system using a digital image correlation software. Finally, based on the results of the uniaxial tensile tests, a one-dimensional macroscopic model is introduced and first results of the simulation are provided.

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  1. Lehrstuhl für Technische Mechanik, Universität des Saarlandes, Campus, Geb. A4.2, 66123, Saarbrücken, Germany

    C. Röhrig, T. Scheffer & S. Diebels

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  1. C. Röhrig
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  2. T. Scheffer
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  3. S. Diebels
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Correspondence to C. Röhrig.

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Communicated by Andreas Öchsner.

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Röhrig, C., Scheffer, T. & Diebels, S. Mechanical characterization of a short fiber-reinforced polymer at room temperature: experimental setups evaluated by an optical measurement system. Continuum Mech. Thermodyn. 29, 1093–1111 (2017). https://doi.org/10.1007/s00161-017-0560-3

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