三维纺织复合材料加工连接与力学性能研究进展

Research progress on processing connection and mechanical properties of three-dimensional textile composites

三维(3D)纺织复合材料具有优异的力学性能、可设计性和近净成形等优势,被视为航空航天和国防军工装备关键部件的理想候选材料。三维纺织复合材料加工连接与力学性能保障是服役可靠性的重要环节,该方面的理论研究仍很薄弱。本文从航空航天及深海等重大工程应用要求出发,着重概述三维纺织复合材料及结构的加工连接方式和工艺,阐述无损检测技术,明确加工连接与力学性能的映射关系,提出三维纺织复合材料加工连接与力学性能面临的关键问题,以期为高承载和高可靠三维纺织复合材料的结构设计和应用提供依据。

Three-dimensional(3D)textile composites have the advantages of excellent mechanical properties,designability,and near-net shape,and are regarded as ideal candidates for key components of aviation and aerospace vehicles.The mechanical properties of machining connection of 3D textile composites are the key guarantee in the reliable service.However,the theoretical research in this area is still very weak.Based on the requirements of the major engineering applications such as aerospace and deep sea,this paper focuses on the overview of the connection methods and processes of 3D textile composite materials and structures.Also,the non-destructive testing technologies are presented.Then,the mapping relationships between processing connection and mechanical properties are clarified,and the key issues on processing connection and mechanical properties of 3D textile composites are proposed.It is expected to provide a basis to design and manufacture 3D textile composites with the high-loadbearing and high-reliability for a better applications.