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Influence of reinforcement architecture on static and dynamic mechanical properties of flax/epoxy composites for structural applications

机译：增强架构对亚麻/环氧复合材料静态和动态力学性能的影响

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摘要

Weave architecture of the reinforcement in polymeric composite structures affects macroscopic mechanical properties of the developed composites significantly along with many other factors. In present article, nine different but systematic weave architectures were obtained by changing the number of simultaneous yarns moving in warp and weft direction of flax (Linum usitatissimum) woven fabric. Static and dynamic mechanical properties (Tensile, Flexural, Impact, loss modulus, storage modulus and damping factor) of flax fiber reinforced epoxy composites were investigated. The effect of weave configurations on failure mechanism of the developed composites has also been studied morphologically. Scanning electron microscopy (SEM) was performed to investigate the failure mechanism of the developed composites. Tensile strength and modulus was found to be significantly affected by the number of simultaneous load sharing fibers weaved in loading direction and crimp of the fabric respectively. Interlacing points of the fabric seems to control the flexural strength and modulus of the developed composites. Reinforcement architecture was also found to be responsible for the changes in impact strength of developed composites. Consistent with Young's modulus, storage modulus and loss modulus were also affected by weave parameters such as unevenness in the architecture of reinforcement
机译：在聚合物复合结构中加固的织物结构与许多其他因素显着影响显着的复合材料的宏观力学性能。在现有的文章中，通过改变亚麻（Linum Usitatisimum）编织织物的经线和纬纱方向的同时纱线的数量来获得九种不同但系统的编织架构。研究了亚麻纤维增强环氧复合材料的静态和动态机械性能（拉伸，弯曲，冲击，损失模量，储存模量和阻尼因子）。编织配置对发达复合材料的故障机制的影响也已经在形态学上进行了研究。进行扫描电子显微镜（SEM）以研究开发复合材料的故障机理。发现拉伸强度和模量分别在织物的加载方向和压接的同时载荷共用纤维的数量显着影响。织物的隔行扫描点似乎控制了开发复合材料的弯曲强度和模量。还发现强化架构负责发达复合材料的冲击强度的变化。与杨氏模量一致，储存模量和损耗模量也受编织参数的影响，例如加固结构中的不均匀性

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