织物及其复合材料具有高强度/重量比和抗高速冲击的能力，已经用于大变形和高能量吸收结构系统中，如防弹衣、弹道盔甲、推进发动机外壳和织物增强复合材料。己实现工业化、大规模生产高性能芳香族聚酞胺纤维(Kevlar 纤维)，广泛应用于防弹领域，被认为是防弹材料发展史上的重要突破，标志着防弹材料由硬质向软质的转变。根据美国NIJ防弹衣标准，弹头被阻挡后冲击深度不超过4.4cm，被测试防弹衣织物结构设计就通过测试。实验结果显示织物的编织面密度与冲击损伤深度没有明显联系，较高的面密度并不意味着更好的防冲击能力。

   防弹织物的能量吸收机制和抗冲击能力评价仍旧是困难的科学问题。当弹头冲击或侵彻织物时，弹头与织物的相互作用表现出宏/微观多尺度变形耦合模式，即纱线抽出拉伸变形、局部纱剪断、远场织物剪切变形和微观纤维剪切变形与拉伸断裂等。通过优化选择合适的纤维力学性质、纱线密度、编织几何方式、织物缝合构型等参数，来协同织物、纱线与和纤维等不同尺度上的变形，从而提高冲击能量吸收能力，达到织物防弹目的。因此，软织物结构的防弹性能优化设计，其本质是研究弹头与织物的交互作用机理，对国防军工相关领域具有科学研究意义。

[1] Ruixiang Bai, Weikang Li, Zhenkun Lei*, Yu Ma, Fuyong Qin, Qingchao Fang, Xiaogang Chen, Yang Chen. Experimental study of yarn friction slip and fabric shear deformation in yarn pull-out test. Composite Part A. 2018, 107: 529-535.

[2] Ruixiang Bai*, Yu Ma, Zhenkun Lei*, Yang Feng. Energy analysis of fabric impregnated by shear thickening fluid in yarn pullout test. Composites Part B-Engineering. 2019, 174: 106901.

[3] Ruixiang Bai, Yu Ma, Zhenkun Lei*, Yang Feng, Jianchao Zou, Da Liu. Shear deformation and energy absorption analysis of flexible fabric in yarn pullout test. Composites Part A: Applied Science and Manufacturing. 2020, 128: 105678.

[4] Ruixiang Bai, Yu Ma, Zhenkun Lei*, Yang Feng, Zhenya Sun, Jianyu Di. Impact resistance analysis of flexible fabric by 3D shape of impact basin in low-speed impact test. Polymer testing. 2020, 81: 106215.

[5] Yu Ma, Zhenkun Lei*, Guangyan Huang, Ruixiang Bai, Yaojie Xu, Xiang Hong. Energy absorption analysis of STF/Kevlar composite fabric based on 3D morphology of impact basin under low-speed impact. Composite Structures. 1 2022, 283: 115152.

[6] Yu Ma, Xiang Hong, Zhenkun Lei*, Ruixiang Bai, Yan Liu, Jiasheng Yang. Shear response behavior of STF/kevlar composite fabric in picture frame test. Polymer Testing. 2022, 113:107652.

[7] Xiang Hong, Yu Ma*, Zhenkun Lei*, Ruixiang Bai, Heshan Bai, Xuwei Li, Jianchao Zou. Analysis of interfacial friction properties of multi-phase STF/Kevlar composite fabrics in yarn pullout test. Materials Today Communications. 2023, 34: 105086.

[8] Yu Ma, Xiang Hong, Yaojie Xu, Zhenkun Lei*, Guangyan Huang. Shear response behavior of SSE/Kevlar composite fabric before and after shear interlocking effect. Composite Structures. 2023, 314: 116979.