固体火箭技术2012，Vol.35Issue(5)：665-669,5.
弯-弯疲劳加载对2D-C/C复合材料热膨胀性能的影响
Effects of flexural fatigue loading on thermal expansion behavior of 2D-C/C composites
摘要
Abstract
The thermal expansion behavior of 2D-C/C composites and the effect of fatigue loading conditions on the thermal expansion of the composites were studied. The flexural fatigue experiment was made under the stress level of 70% and 90% , cycling times of 104 , 5 X 104 , 1 X 105 and 1.5x10 , and then the thermal behavior was investigated. The results show that fatigue loading didn't change the variation law that thermal expansion behavior is improved with the increased temperature. However, compared with the thermal expansion behavior of 2D-C/C composites at different fatigue loading conditions, the thermal expansion behavior of the samples after fatigue loading drops with increasing of the stress level and cycling times, which is due to the all kinds of fatigue damages generated during the fatigue loading.关键词
2D-C/C复合材料/物理热膨胀系数/工程热膨胀系数/疲劳加载/疲劳损伤Key words
C/C composites/ coefficient of physical thermal expansion/ coefficient of thermal expansion project/ fatigue loading/ fatigue damage分类
航空航天引用本文复制引用
杨晓辉,卢锦花,李克智,张守阳,杨茜,曾燮榕..弯-弯疲劳加载对2D-C/C复合材料热膨胀性能的影响[J].固体火箭技术,2012,35(5):665-669,5.基金项目
凝固技术国家重点实验室基金(G8QT0222) （G8QT0222）
国家自然科学基金重点项目(50832004) （50832004）
深圳大学深圳市场特种材料重点实验室开放基金资助项目(T0906). （T0906）
