Schäfer Kay, Nestler Daisy, Kroll Lothar
Endowed Chair Textile Plastic Composites and Hybrid Compounds, Faculty of Mechanical Engineering, Technical University of Chemnitz, 09126 Chemnitz, Germany.
Department of Lightweight Structures and Polymer Technology, Faculty of Mechanical Engineering, Technical University of Chemnitz, 09126 Chemnitz, Germany.
Materials (Basel). 2022 Jan 20;15(3):764. doi: 10.3390/ma15030764.
Innovative materials for substituting metals are required to reduce the mass of moving components. This decreases the CO emissions of overall systems. A thermoset sandwich for high mechanical properties and thermal insulation is presented in this paper. It has an innovative 3D continuous reinforced core, which allows the optimisation of the substance exploitation by wide-ranging possibilities of fibre orientation. This was demonstrated with three sandwich variants. The reference had no core reinforcement and the other two were reinforced with different spacer fabrics. The process chain for the manufacturing consists of Structural Reaction Injection Moulding (SRIM) and Vacuum Assisted Resin Transfer Moulding (VARTM). Significant increases in absolute as well as specific characteristic values were demonstrated by the reinforcement in a compression and bending test. It was also shown that quasi-static characteristic values under fatigue loading are maintained to a greater extent with the core reinforcement. The sandwich material was applied as a floor assembly for a snow groomer. The design was tailor-made for the mechanical, thermal and acoustic requirements. This proved the transferability of the process chain for manufacturing samples to the production of large-volume components with complex geometry.
需要创新材料来替代金属，以减轻运动部件的质量。这将减少整个系统的一氧化碳排放。本文介绍了一种具有高机械性能和隔热性能的热固性三明治结构。它有一个创新的三维连续增强芯层，通过广泛的纤维取向可能性实现了材料利用的优化。通过三种三明治变体对此进行了演示。参考样品没有芯层增强，另外两种用不同的间隔织物进行了增强。制造工艺链包括结构反应注射成型（SRIM）和真空辅助树脂传递模塑（VARTM）。在压缩和弯曲试验中，增强材料使绝对以及特定特征值显著提高。还表明，在疲劳载荷下，芯层增强材料能在更大程度上保持准静态特征值。这种三明治材料被用作雪地平整机的地板组件。该设计是根据机械、热和声学要求量身定制的。这证明了制造样品的工艺链可转移到具有复杂几何形状的大批量部件的生产中。
