复合材料制造过程中各种亚麻织物结构的压实行为：力学特性和微观结构分析
Compaction behaviour of various flax fabric structures during composite manufacturing: mechanical characterisation and microstructural analysis
摘要：
亚麻纤维增强复合材料由于其在生产和回收方面的环境友好性以及良好的比强度而在汽车和民用工业中越来越受欢迎。织物结构在复合材料制造过程中经历横向压实，这改变了织物厚度并最终改变了复合材料的纤维体积分数。在这里，不同的亚麻纤维结构进行了研究，在复合材料成型过程中的压实行为，研究这些织物的厚度变化之间的压力为1和10巴。一系列的复合材料制造工艺，包括真空灌注，高压釜固化和树脂传递模使用。这些织物进行了研究，在单层和多层状态下，在干燥和潮湿的状态下，在不同的负载周期和在不同的方向的织物层（00/00和00/900）。已经计算了单层和多层干织物的层的嵌套。据观察，在横向压缩下，预成型件的结构在确定预成型件的厚度方面起着至关重要的作用。这些不同的结构的压缩模式也是不同的单层和多层堆叠，这是由于这些亚麻纤维结构的不同嵌套行为。
英文摘要：
Flax fibre reinforced composites are becoming popular in the automotive and civil industries due to their environmentally friendly nature in terms of production and recycling and for their good specific strength. Textile structures undergo transverse compaction during composite manufacturing which changes the fabric thickness and ultimately fibre volume fraction of composites. Here, different flax fibre structures were investigated for compaction behaviour during composite forming to study the thickness changes of these fabrics under pressures between 1 and 10 bars. A range of composite manufacturing processes including vacuum infusion, autoclave curing and resin transfer moulding were utilised. These fabrics were studied in single and multi layer states, in dry and wet states, under different loading cycles and in different orientations of the fabric plies (00/00 and 00/900). Nesting of the layers has been calculated for single plies and for multi-layer stacks of dry fabrics. It was observed that under transverse compression, the structure of the preform plays a vital role in determining the thickness of the preform. The compressibility pattern of these various structures was also dissimilar for single layer and multi-layer stack which was attributed to the different nesting behaviours of these flax fibre structures.
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