Degradation of yarns recovered from soft-armor targets subjected to multiple ballistic impacts
Degradation of yarns recovered from soft-armor targets subjected to multiple ballistic impacts
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DOI：
10.1016/j.compositesa.2013.12.004
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发表时间：
2014-03
影响因子：
8.7
通讯作者：
M. Hudspeth;A. Agarwal;B. Andrews;B. Claus;F. Hai;C. Funnell;James Q. Zheng;Weinong W. Chen
中科院分区：
文献类型：
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作者：
M. Hudspeth;A. Agarwal;B. Andrews;B. Claus;F. Hai;C. Funnell;James Q. Zheng;Weinong W. Chen
采用2/2斜纹结构的AuTx纱线组成的两种不同的弹丸包，分别受到9-mm弹丸和2- mm弹丸的冲击，分析了弹丸冲击后残余纱线的力学性能。研究发现，无论纱线方向、股线位置或穿透器尺寸如何，两种枪弹包的纱线机械性能都产生了相似的结果，这表明枪弹包中的弹道损伤是非常局部的，对相邻纱线的损伤很小。将这些经弹道冲击编织后提取的纱线的机械性能与收到的天然卷绕AuTx纱线进行比较，结果显示拉伸强度略有降低，失效应变增加，弹性模量降低，因此纱线韧性变化不大。
Post ballistic impact residual yarn mechanical properties were analyzed from two different as-received shoot packs composed solely of AuTx yarn possessing the 2/2 twill weave structure, one being impacted by 9-mm projectiles and the other by 2-grain projectiles. It was found that yarn mechanical properties from both shoot packs yielded similar results, regardless of yarn orientation, ply location, or penetrator size, which indicates that ballistic damage in the packets is very localized, producing little damage to the neighboring yarns. Mechanical properties of these woven, ballistically impacted, and then extracted yarns were compared to as-received native spooled AuTx yarn yielding a slight reduction in tensile strength, an increase in failure strain, and a reduction in elastic modulus, thereby yielding little variation in yarn toughness.