Alkhatib Farah, Mahdi Elsadig, Dean Aamir
Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha P.O. Box 2713, Qatar.
School of Civil Engineering, College of Engineering, Sudan University of Science and Technology, Khartoum P.O. Box 72, Sudan.
Polymers (Basel). 2021 Apr 30;13(9):1450. doi: 10.3390/polym13091450.
In this paper, hybrid composite plates for ballistic protection were investigated experimentally and numerically, with a target to reduce the weight of currently used body armor inserts and, at the same time, satisfy the requirements of the National Institute of Justice's (NIJ) ballistic protection standards. The current study has three phases to improve the ballistic plate's energy absorption capability. The first phase is devoted to studying the effect of the material types, including three different fibers: carbon fiber, date palm fiber, and Kevlar fiber. The second phase is dedicated to studying the effect of hybridization within layers. The two previous phases' results were analyzed to optimize the material based on the hybrid composite ballistic plate's maximum energy absorption capability. The commercial finite element software package LS-DYNA was employed for numerical modeling and simulation. The hybrid composite ballistic plate could absorb more impact energy than the non-hybrid Kevlar plate with the same area density from the numerical simulation results. This study provides lighter-weight ballistic inserts with a high protection level, making movement easier for the wearer. The numerical results were verified by comparing results of a plate made of 40 layers of Kevlar with an actual ballistic test. The results indicated that the simulation results were conservative compared to the ballistic test.
在本文中，对用于防弹保护的混杂复合材料板进行了实验和数值研究，目标是减轻当前使用的防弹衣插板的重量，同时满足美国国家司法研究所（NIJ）的防弹保护标准要求。当前的研究有三个阶段来提高防弹板的能量吸收能力。第一阶段致力于研究材料类型的影响，包括三种不同的纤维：碳纤维、枣椰纤维和凯夫拉纤维。第二阶段致力于研究层内混杂的影响。分析了前两个阶段的结果，以便基于混杂复合材料防弹板的最大能量吸收能力来优化材料。使用商业有限元软件包LS-DYNA进行数值建模和模拟。从数值模拟结果来看，混杂复合材料防弹板比具有相同面密度的非混杂凯夫拉板能吸收更多的冲击能量。本研究提供了具有高防护水平的轻质防弹插板，使穿戴者行动更轻松。通过将由40层凯夫拉制成的板的结果与实际弹道测试结果进行比较，验证了数值结果。结果表明，与弹道测试相比，模拟结果较为保守。
