Mechanical characterization of a short fiber-reinforced polymer at room temperature: experimental setups evaluated by an optical measurement system
Mechanical characterization of a short fiber-reinforced polymer at room temperature: experimental setups evaluated by an optical measurement system
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DOI：
10.1007/s00161-017-0560-3
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发表时间：
2017-02
影响因子：
2.6
通讯作者：
C. Röhrig;T. Scheffer;S. Diebels
中科院分区：
文献类型：
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作者：
C. Röhrig;T. Scheffer;S. Diebels
复合材料由于其优异的性能而在工业应用中引起了极大的兴趣。由于基质和填料的大量可能组合，每种复合材料都有自己的特性。由于复合，复合材料通常表现出复杂的材料行为。这项工作的重点是在室温下的短纤维增强热塑性复合材料的实验测试。这类材料的特性通常基于典型材料效应的叠加。预测的特征材料性能，如弹塑性，损伤和各向异性的研究材料的循环单轴拉伸试验在恒定应变率的结果。关于制造过程以及工业应用，实验研究扩展到多轴载荷的情况下。因此，用接近深拉工艺的装置，即Nakajima试验（Nakazima等人，Study on the formability of steel sheets. Yawate Technical Report No. 264，pp 8517-8530，1968）。实验研究的评价由使用数字图像相关软件的光学分析系统提供。最后，基于单轴拉伸试验的结果，介绍了一个一维宏观模型，并提供了第一个模拟结果。
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.