编织复合材料拉伸力学性能的研究

详细信息

STUDIES ON TENSILE PROPERTIES OF BRAIDED STRUCTURAL COMPOSITE MATERIALS

1.
Research Center of Solid Mechanics, Beijing University of Aeronautics and Astronautics, Beijing 100083;
2.
Beijing Institute of Technology and Materials, Beijing 100076;
3.
Dept. of Material Science and Engineering, Tsinghua University, Beijing 100084

摘要

摘要: 针对三维四向和五向编织复合材料进行了拉伸实验, 从宏观角度研究了它们的力学行为, 获得了这些材料的主要力学性能参数及变形、破坏规律。基于宏观实验, 本文还对拉伸试件断口进行了扫描电镜测试, 从细观角度对编织复合材料的破坏机制作了分析, 得到一些重要结论。这些结果为进一步研究编织复合材料的强度失效问题奠定了实验基础。
- 碳纤维, 编织结构, 复合材料, 拉伸, 力学性质
Abstract: The tensile experiments have been done for the 4D(fourdirection) and 5D (fivedirection) braided composites. Their mechanical properties are investigated from the macroscopic view and some principal mechanical properties as well as thier deformational characteristics are obtained at the same time. On the basis of tensile experiments, the SEM analyses of tensile broken specimens have been conducted. The failure mechanism of braided composites is discussed from the microscopic view, by which some important conclusions are drawn. These results can provide an experimental basis for further studies on failure problems of braided composites.
- carbon fiber