摘要
对 T700/TDE86 碳纤维增强树脂基复合材料进行加速循环湿热老化实验,研究不同循环湿热老化天数对Ⅰ型张开以及Ⅱ型滑移两种层间断裂韧度的影响。结果表明:循环湿热老化之后的复合材料Ⅰ型层间断裂韧度出现明显的 R 曲线,且随着循环湿热老化天数的增加,裂纹初始扩展能量释放率(GIC,init)与裂纹稳态扩展能量释放率(GIC,prop)都获得了大幅提升;复合材料Ⅱ型层间断裂韧度随着循环湿热老化天数的增加,呈现阶梯状下降的趋势,而且在循环湿热老化前期,下降幅度最大,为 21.68%。
The artificial accelerated cyclic hygrothermal aging test was conducted on T700/TDE86 carbon fiber reinforced resin matrix composites, and the effects of different cyclic hygrothermal aging days on interlaminar fracture toughness of composites with open type (mode Ⅰ) and slip type (mode Ⅱ) were investigated. The results show that the model Ⅰ interlaminar fracture toughness of composite after cyclic hygrothermal aging exists an obvious R curve, the initial extend energy release rate (GIC,init) and the propagational extend energy release rate (GIC,prop) of composite are improved remarkably with the increase of cyclic hygrothermal aging days. The model Ⅱ interlaminar fracture toughness of composite appears a trapezoidal descent with the increase of cyclic hygrothermal aging days, and the decline is the largest at the early stage of cyclic hygrothermal aging and the largest descent is 21.68%.
作者
徐凯龙
刘璐璐
赵振华
双超
陈伟
XU Kailong;LIU Lulu;ZHAO Zhenhua;SHUANG Chao;CHEN Wei(Aero-engine Thermal Environment and Structure Key Laboratory of the Ministry of Industry and Information Technology, NanjingUniversity of Aeronautics and Astronautics, Nanjing 210016,China)
出处
《航空材料学报》
EI
CAS
CSCD
北大核心
2019年第4期40-48,共9页
Journal of Aeronautical Materials
基金
国家自然科学基金(51605218)
航空动力基金(6141B090305)
关键词
循环湿热老化
复合材料
Ⅰ型层间断裂韧度
Ⅱ型层间断裂韧度
cyclic hygrothermal aging
composite
mode-Ⅰ interlaminar fracture toughness
mode-Ⅱ interlaminar fracture toughness