三维编织碳／碳复合材料高温力学性能的测试与预报

MEASUREMENT AND PREDICTION OF THE TENSILE PROPERTIES FOR 3D C/C COMPOSITE AT HIGH TEMPERATURE

用快速通电加热测试技术研究了细编穿刺３ＤＣ／Ｃ复合材料在２８００℃时的拉伸性能．把碳纤维和基体的性能作为己知参数，选取适当细观代表性单胞，利用细观力学和三维有限元方法预报其高温弹性模量，分析了织物结构参数的影响，其随温度的变化规律与实测结果吻合．

The tensile properties of 3D carbon/carbon composite at ultra-high temperature have been studied based on rapid resistive self-heating technique. This paper also describes a mini-finite element model for evaluation of high temperature elastic modulus of 3D C/C composite and the variation of tensile properties with substrate parameters such as xy- woven layers, fiber boundles and fiber spacing was analyzed.The results predicted suit the experimental data well.