现代纺织技术2025，Vol.33Issue(7)：39-47,9.DOI:10.12477∕j.att.202501005
UHMWPE无纬布软质防弹层的抗破片侵彻试验
An experimental study on the anti-fragmentation penetration of soft bulletproof layers made of unidirectional UHMWPE fabric
摘要
Abstract
UHMWPE fibers represent the third generation of high-performance fibers,following carbon fibers and aramid fibers.They boast multiple advantages such as high modulus,high strength,and excellent energy absorption characteristics.UHMWPE fibers are notably lightweight,being approximately 20%lighter than conventional aramid fibers and 30%lighter than carbon fiber-reinforced composites.The molecular chains of UHMWPE fibers possess an extremely high linearity,with their mechanical properties further enhanced by high orientation and crystallization during the spinning process.The molecular structure with high orientation and crystallization provides UHMWPE fibers with exceptional strength and modulus.Additionally,it demonstrates excellent energy absorption and acoustic emission transmission capabilities under dynamic loading conditions.Overall,due to its unique molecular structure and outstanding mechanical properties,UHMWPE fibers hold significant application potential in the field of lightweight and high-strength composites,especially in the area of personal protection.Therefore,conducting experimental research on the anti-fragmentation penetration of soft bulletproof layers made of unidirectional UHMWPE fabric is crucial for optimizing body armor design to enhance their safety. Soft bulletproof layers are a crucial component of bulletproof vests,and ultra-high molecular weight polyethylene(UHMWPE)fibers are widely utilized within these soft ballistic layers.This study focused on soft bulletproof layers made of unidirectional UHMWPE fabric to conduct fragmentation penetration tests using two different shapes of targets:flat-head and wedge-head ones.A 1.1g cylindrical simulated fragment was employed for these tests to determine the ballistic ultimate velocity,known as V50.Image J software was utilized to measure the damage areas of bullet holes of each layer,in order to analyze the damage morphology caused by the fragments and study the ballistic penetration mechanism under different target-hitting morphologies.The results revealed that when fragments penetrate the soft bulletproof layers in the two different morphologies at similar impact velocities,the total damage area to a single layer of unidirectional fabric is comparable.The ballistic limit(V50)for fragments impacting with a flat head is,on average,4.01%higher than that for fragments impacting with a wedge head.Additionally,the ultimate energy absorption of the soft bulletproof layer when fragments impact with a flat head is,on average,8.19%higher than that when fragments impact with a wedge head.Furthermore,as the areal density increases,the energy absorbed per unit areal density by the unidirectional UHMWPE fabric soft ballistic layer decreases. The unidirectional UHMWPE fabric soft ballistic layer is a key component of soft body armor and is commonly used in military,police,and civilian personal protective equipment.Research on the anti-penetration mechanisms and the penetration process of the soft bulletproof layers made of unidirectional UHMWPE fabric has been enhanced to provide a theoretical foundation and technical support for the effective design of soft body armor.关键词
软质防弹层/弹孔损伤/弹道极限V50/极限吸能/极限比吸能Key words
soft bulletproof layer/bullet hole damage/ballistic limit V50/ultimate energy absorption/limit specific energy absorption分类
通用工业技术引用本文复制引用
任安苛,王绪财,王伟,卢振宇,李保鼎,彭刚..UHMWPE无纬布软质防弹层的抗破片侵彻试验[J].现代纺织技术,2025,33(7):39-47,9.基金项目
国防科技重点实验室基金项目(6142902230201) （6142902230201）
