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首页> 外文期刊>Polymers for advanced technologies >An experimental investigation on the low-velocity impact behavior of 3D five-directional braided composites
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An experimental investigation on the low-velocity impact behavior of 3D five-directional braided composites

机译：3D五向编织复合材料低速冲击性能的实验研究

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摘要

This paper presents an experimental study on the low-velocity impact performance of 3D carbon/epoxy braided composite panels with different braiding parameters, which have the similar fiber volume fraction but different braiding angles (15°, 25°, and 35°). The low-velocity impact tests were conducted at three different energy levels of 15, 30, and 45 J. Impact response of the panels was recorded and analyzed in terms of peak load, absorbed energy, time, and deflection at peak load. The images of damage samples taken from impacted sides and non-impacted sides were evaluated for the damage area and failure patterns. Through analysis, they discovered that samples with bigger braiding angle sustained higher peak loads; moreover, the fiber was arranged more closely, and the shock resistance improved as the braiding angle is increasing.
机译：本文对具有不同编织参数，纤维体积分数相似但编织角度（15°，25°和35°）不同的3D碳/环氧编织复合板的低​​速冲击性能进行了实验研究。在15 J，30 J和45 J的三种不同能量水平下进行了低速冲击测试。根据峰值载荷，吸收能量，时间和峰值载荷下的挠度，记录并分析了面板的冲击响应。从受冲击的侧面和未受冲击的侧面获取的损坏样本的图像被评估为损坏面积和破坏模式。通过分析，他们发现编织角度更大的样品承受更高的峰值载荷。此外，纤维的排列更紧密，并且随着编织角度的增加，抗冲击性也得到了改善。

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