宇航材料工艺2017，Vol.47Issue(6)：43-45,3.DOI:10.12044/j.issn.1007-2330.2017.06.008
针刺C/C复合材料高温力学性能
Analysis of High Temperature Mechanical Properties of Needled Felt C/C Composite Material
郑伟 1林志远 1刘芹 1李耿 1侯晓2
作者信息
- 1. 西安航天动力技术研究所,西安710025
- 2. 航天动力技术研究院,西安710025
- 折叠
摘要
Abstract
The tensile and compressive properties of needled felt C/C composite material at the temperature range of 20℃ to 1800℃ have been studied by test system of ultra-high temperature material performance and strain measurement system under high temperature.The results show that needled felt C/C composite material has different elastic modulus for tension and compression obviously,and the tensile and compressive modulus decrease linearly with the rise of temperature,but the tensile modulus decreases more quickly.At the same time,the tensile and compressive strength increase first then decrease with the rise of temperature,and the tensile strength reach to the maximum value at the temperature of 1600℃,then the compressive strength reach to the maximum value at the temperature of 1200℃.Needled felt C/C composite material shows fiber tensile brittle damage and fracture angle of 45° by high tem perature tensile.On the other hand,needled felt C/C composite material shows compression failure caused by typical shear stress and the oblique angle of fracture plane is 45° under high temperature compression conditions.关键词
针刺C/C复合材料/高温/拉伸/压缩Key words
Needled felt C/C composite material/High temperature/Tension/Compression分类
通用工业技术引用本文复制引用
郑伟,林志远,刘芹,李耿,侯晓..针刺C/C复合材料高温力学性能[J].宇航材料工艺,2017,47(6):43-45,3.
