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首页> 外文期刊>Polymer Composites >Effect of multiphase fiber system and stacking sequence on low-velocity impact and residual tensile behavior of glass/epoxy composite laminates
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Effect of multiphase fiber system and stacking sequence on low-velocity impact and residual tensile behavior of glass/epoxy composite laminates

机译：多相纤维系统和堆叠序列对玻璃/环氧复合层压材料低速冲击及残留拉伸行为的影响

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This article investigates the effect of multiphase fiber system based on plain weave woven fabrics and chopped short fibers in glass/epoxy composite laminates on low-velocity drop weight impact and quasi-static tensile after impact (TAI) behaviors. In this regard, glass/epoxy composites with two stacking sequences (intercalated and sandwich-like lay-ups) were tested and compared with homogeneous standard composites fabricated with either only woven or only chopped fibers. In all the samples with multiphase fiber system, the amount of woven and chopped glass fibers were equal (4 layers and 3 layers, respectively), while stacking sequences were different. This enabled us to investigate the associated influences of fiber architecture and stacking sequence on low-velocity drop weight impact and TAI behavior of the glass/epoxy composite laminates. All the glass/epoxy samples were impacted at four various impact energy levels, particularly 2, 4, 6, and 8 J. Results depicted that fiber architecture and stacking sequence played a vital role in low-velocity drop weight impact and TAI behavior (i.e., damage degree, absorbed energy, peak contact force, residual deformation, residual tensile strength, displacement to ultimate failure, and failure profile) of the glass/epoxy samples. The results depicted that the sandwich-like lay-up configuration presented superior impact properties and damage tolerance capabilities at low impact energies (up to 4 J). On the contrary, intercalated lay-up arrangement suited better to withstand widespread damage generated by higher impact energy levels (6 and 8 J), because they enabled a more efficient redistribution of low-velocity impact damage in the composite. POLYM. COMPOS., 40:1450-1462, 2019. (c) 2018 Society of Plastics Engineers
机译：本文研究了基于普通织物织物的多相纤维系统对玻璃/环氧复合层压板中的切碎短纤维的影响，在低速下降重量撞击和冲击后的准静态拉伸（TAI）行为。在这方面，测试了具有两个堆叠序列的玻璃/环氧复合材料（嵌入和夹层样敷积），并与仅由织造或仅切碎的纤维制造的均匀标准复合材料进行比较。在具有多相纤维系统的所有样品中，编织和切碎的玻璃纤维的量相等（分别为4层和3层），同时堆叠序列不同。这使我们能够研究光纤架构和堆叠序列对玻璃/环氧复合层压材料的低速下降重量影响和Tai行为的相关影响。所有玻璃/环氧样品都受到四种各种冲击能级，特别是2,4,6和8 J.所示的结果所示的纤维架构和堆叠序列在低速下降重量和泰行为中发挥了至关重要的作用（即玻璃/环氧样品的损伤程度，吸收能量，峰接触力，残余变形，残余拉伸强度，位移和终极故障的失效型材）。结果描绘了夹层的叠层配置，在低冲击能量下呈现出优异的冲击性能和损坏容差能力（最多4 j）。相反，插入的铺设安排适用于承受较高的冲击能级（6和8 j）产生的广泛损伤，因为它们使复合材料中的低速冲击损坏更有效地重新分布。聚合物。 Compos，40：1450-1462,2019。（c）2018年塑料工程师协会

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