High strain-rate dynamic mechanical properties of Kevlar fabrics impregnated with shear thickening fluid

被引：85
|
作者：
Cao, Saisai [1 ]
Chen, Qian [1 ]
Wang, Yunpeng [1 ]
Xuan, Shouhu [1 ]
Jiang, Wanquan [2 ]
Gong, Xinglong [1 ]
机构：
[1] Univ Sci & Technol China, Dept Modern Mech, CAS Key Lab Mech Behav & Design Mat, Hefei 230027, Anhui, Peoples R China
[2] USTC, Dept Chem, Hefei 230026, Anhui, Peoples R China
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2017年 / 100卷
基金：
中国国家自然科学基金;
关键词：
Fabrics/textiles; Nanoparticles; Impact behavior; Mechanical testing; Shear thickening fluid; YARN PULL-OUT; STAB-RESISTANCE; BALLISTIC IMPACT; BEHAVIOR; COMPOSITES; PERFORMANCE; PARTICLES; PRESSURE; STFS;
D O I：
10.1016/j.compositesa.2017.04.015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To investigate the anti-impact mechanism, the mechanical property and energy absorption of the SIT impregnated Kevlar (STF/Kevlar) fabric at high strain rate were conducted using a split Hopkinson pressure bar (SHPB) system. The volume fraction of STF, number of fabric specimens, and impact velocity highly affected the dynamic mechanical performance of the STF/Kevlar composite. The energy transfer rate decreased from 0.85 to 0.01 once the number of fabric specimens increased from 2 layers to 8 layers. The strain rate stiffening mechanism of the STF/Kevlar was analyzed. The Kevlar fabrics underwent four sections during the impact process. The STF was mainly worked in the slip and deformation section by enhancing the friction between fabric yarns and preventing the fabric yarns from slipping. Overall, this work demonstrated that the multilayer Kevlar fabrics impregnated with high volume fraction of STF were the optimal choice for soft body armor. (C) 2017 Published by Elsevier Ltd.
引用
收藏
页码：161 / 169
页数：9
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