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Tailored material properties using textile composites

机译：使用纺织复合材料量身定制的材料特性

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Lightweighting is essential for the reduction of energy consumption in transportation. The most common approach is through the application of high specific strength and stiffness materials, such as composites and high performance aluminum alloys. One of the challenges associated with the use of advanced materials is the high cost. This paper explores the opportunities of using hybrid composites (glass and carbon, for example) with selective fiber placement to optimize the weight subject to price constraints for given components. Considering the example of a hat-section for hood reinforcement, different material configurations were modeled and developed. The required thickness of the hat section to meet the same bending stiffness as an all carbon composite beam was calculated. It was shown that selective placement of fiber around the highest moments results in a weight savings of around 14% compared to a uniformly blended hybrid with the same total material configuration. From this it is possible to estimate the materials cost of the configurations as well as the weight of the component. To determine which is best it is necessary to find an exchange constant that converts weight into cost-the penalty of carrying the extra weight. The value of this exchange constant will depend on the particular application.
机译：轻质对运输中的能耗降低至关重要。最常见的方法是通过应用高比强度和刚度材料，例如复合材料和高性能铝合金。与使用先进材料相关的挑战之一是高成本。本文探讨了使用混合复合材料（玻璃和碳，例如玻璃和碳）的机会，选择性纤维放置，以优化对给定组件的价格约束的权重。考虑到引擎盖加固的帽子部分的示例，建模和开发了不同的材料配置。计算帽部分所需的厚度，以满足与所有碳复合梁相同的弯曲刚度。结果表明，与具有相同总材料构型的均匀混合的杂交相比，纤维围绕最高时刻的选择性放置在最高时刻的重量节省约为14％。根据这，可以估计配置的材料成本以及组件的重量。为了确定哪个是最好的，有必要找到将重量转换为成本的交换常数 - 携带额外重量的惩罚。此Exchange常量的值将取决于特定应用程序。

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