智能Kevlar纤维复合织物的力学行为设计与性能表征分析

基于Kevlar纤维研制而成的防护织物具有极高的强度和柔韧性，因而在防弹装甲、防爆装置、防弹衣等领域具有十分重要的应用前景。随着近年来对软体防弹衣需求的日益增长，新型多功能Kevlar纤维复合织物以其独特的隐身、力传感等耦合性能在人体防护装备中引起广泛关注。针对目前软体人体防护材料的不足之处，本项目在已有预研基础上，优化制备方法和工艺，研制兼具冲击防护和力传感性能的智能Kevlar纤维复合织物，建立该材料的力-电耦合性能测试系统，研究不同冲击条件下Kevlar纤维复合织物的力-电耦合行为，分析基于微观结构演化的力-电耦合作用机制，探索该类智能材料的吸能机理，解析电学响应与冲击力之间的关系，阐明通过电学响应的力传感机理，进一步建立能正确描述其力-电耦合行为的参数模型。最后，总结实验和理论研究结果，优化设计智能人体防弹衣，推动该材料的工程应用。

Because of the high strength and flexibility, the protection fabric based on the Kevlar fibre possesses broad and important potential in bulletproof armor, explosion-proof device, and body armor, etc. Recently, with the increasing requirement of the soft body armor, novel multifunctional Kevlar composite fabric has attracted more and more research interests due to their special invisibility, force sensitivity and other coupling properties. Aimed at the shortages of present soft body armor, we proposed this proposal based on our pre-experiments. This application is focused on optimizing the fabrication method and technique, preparing the high performance smart Kevlar composite fabric with both anti-impact and force sensitivity characteristics, establishing the testing systems of the electro-mechanical coupling property, investigating the electro-mechanical coupling behavior under different impacts. By combining the structural evolution and electro-mechanical coupling property, we will explore the detail mechanism for the energy absorption, analyze the relationship between electrical response and impact force, describe the mechanism of force sensing by electrical response, and then establish a dynamic model which can correctly describe the electro-mechanical coupling property. Finally, based on the experimental and theoretical results, a smart body armor will be designed to further improve their application in the engineering areas.