An analysis of deformation and energy absorption modes of shear thickening fluid treated Kevlar fabrics as soft body armour materials
An analysis of deformation and energy absorption modes of shear thickening fluid treated Kevlar fabrics as soft body armour materials
复制标题
DOI：
10.1016/j.matdes.2013.04.016
复制
发表时间：
2013-10-01
影响因子：
8.4
通讯作者：
Srivastava, Ankita
中科院分区：
文献类型：
--
作者：
Majumdar, Abhijit;Butola, Bhupendra Singh;Srivastava, Ankita
本文介绍了剪切增稠流体（STF）处理和未处理的凯夫拉机织物在冲击载荷作用下的变形和能量吸收模式。有人发现，在未经处理的凯夫拉织物，只有主要的纱线，这是从事的冲击，参与负荷分担，因此能量吸收。由于每根纱线的负荷很高，纱线在抓地力处滑动，形成长环，但织物的其余部分保持不受干扰。由于只有少数纱线参与，能量吸收低。然而，在STF处理的织物的情况下，STF在冲击期间转化成固体状材料。转化后的STF充当桥接基质，将织物中的纱线网络转化为单一结构。因此，与未经处理的织物不同，整个织物而不是仅初级纱线参与承载和能量吸收。经STF处理的结构的失效是由于纤维和纱线的断裂而不是它们的滑动。(c)2013爱思唯尔有限公司保留所有权利。
In this article the deformation and energy absorption modes of shear thickening fluid (STF) treated and untreated Kevlar woven fabrics upon impact has been presented. It was found that in untreated Kevlar fabrics, only the primary yarns, which are engaged by the impactor, participate in load sharing and hence energy absorption. Since the load per yarn is high, the yarns slip at the grip, forming long loops but the rest of the fabric remains undisturbed. Due to participation of only a few yarns, the energy absorption is low. However, in case of STF treated fabrics, the STF is transformed into a solid like material during impact. The transformed STF acts as a bridging matrix which converts the network of yarns in the fabric into a single structure. Hence, unlike in untreated fabrics, the entire fabric rather than only primary yarns participates in load bearing and energy absorption. The failure of the STF treated structure is by rupture of fibers and yarns rather than their slippage. (c) 2013 Elsevier Ltd. All rights reserved.