1 College of Airworthiness, Civil Aviation University of China, Tianjin 300300, China; 2 School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
Abstract: The fatigue performance of composites decreases with the temperature increase. The effect of temperature should be considered when determining the composite structure life. In this paper, the tensile fatigue properties of orthotropic composite laminates in CTD, RTD and ETD environment were tested. The S-N curves in three environments were obtained, and the influence of temperature on fatigue properties of composite was analyzed. Based on experimental results, the fatigue finite element model (FEM) of composite under the temperature condition was established to simulate the fatigue life and damage mechanism. The linear fitting fatigue results show that the maximum fatigue stress in CTD environment is a little smaller than that in RTD environment, while the maximum fatigue stress in ETD environment is obvious less than that in RTD environment. In CTD environment, the fracture surface of fatigue failure is relatively neat, the fiber is basically broken at the same longitudinal position, and the matrix near the fracture surface is relatively intact. The degree of fracture is very low, and there is no delamination; In RTD environment, there is no obvious delamination at the fracture surface of the specimen; In ETD environment, there is obvious delamination along the thickness with fibers pulled out and serious matrix cracks. The FEM analysis shows that the fatigue failure of the specimen is brittle fracture under CTD environment, which shows flat fracture section and narrow fracture area, while the fracture section is not smooth and uniform with relatively wider fracture area under RTD and ETD environments.
1 Huang W J,He Z P,Cheng X Q. High Technology Fiber Application, 2016, 41(5), 7(in Chinese). 黄文俊, 何志平, 程小全. 高科技纤维与应用, 2016, 41(5), 7. 2 Wang X G, Yu Y, Li S M, et al. Fiber Composites, 2011, 28(2), 44(in Chinese). 王兴刚, 于洋, 李树茂, 等. 纤维复合材料, 2011, 28 (2), 44. 3 Zhu J S, Wang Z, Ou F. New Technology and New Process, 2012, 33(9), 76(in Chinese). 朱晋生, 王卓, 欧峰. 新技术新工艺, 2012, 33(9), 76. 4 Sethi S, Ray B C. Advances in Colloid and Interface Science, 2015, 217, 43. 5 Zhao P. Research on the hygrothermal aging performance of FRP compo-sites. Master's Thesis, Nanjing University of Aeronautics and Astronautics, China, 2009(in Chinese). 赵鹏. 纤维增强树脂基复合材料湿热老化性能研究. 硕士学位论文, 南京航空航天大学, 2009. 6 Yu Z G, Yang S C, Song B F. Materials for Mechanical Engineering, 2009, 33(6), 51(in Chinese). 余治国, 杨胜春, 宋笔锋. 机械工程材料, 2009, 33(6), 51. 7 Ma B L, Feng Y, He Y T, et al. Journal of Zhejiang University-Science A(Applied Physics & Engineering), 2019, 20(7), 499. 8 Montesano J, Fawaz Z, Behdinan K, et al. Composite Structures, 2013, 101, 129. 9 Gu Y, Yao W X. Acta Materiae Compositae Sinica, 1999(3), 99,(in Chinese). 顾怡, 姚卫星. 复合材料学报, 1999(3), 99. 10 Jin H. Science and Technology Innovation Herald, 2014, 11(22), 76,(in Chinese). 金晖. 科技创新导报, 2014, 11(22), 76. 11 Li M, Zhang B Y. Fiber Composites, 2006(1), 3(in Chinese). 李敏, 张宝艳. 纤维复合材料, 2006(1), 3. 12 Liu S F, Cheng X Q, Bao J W. Polymer Materials Science & Enginee-ring, 2014, 30(9), 183(in Chinese). 刘淑峰, 程小全, 包建文. 高分子材料科学与工程, 2014, 30(9), 183. 13 Wang S M. Effect of temperature and humidity environment on mechanical properties of carbon fiber composites. Master's Thesis, Nanjing University of Aeronautics and Astronautics, China, 2011(in Chinese). 王世明. 温度与湿度环境对碳纤维复合材料力学行为的影响研究. 硕士学位论文, 南京航空航天大学, 2011. 14 Wang X J, Liang G Z, Zhang W, et al. Journal of Solid Rocket Technology, 2006(4), 301(in Chinese). 王晓洁, 梁国正, 张炜, 等. 固体火箭技术, 2006(4), 301. 15 Yang X D, An T, Zou T C, et al. Journal of Materials Engineering, 2019, 47(7), 84(in Chinese). 杨旭东, 安涛, 邹田春, 等. 材料工程, 2019, 47(7), 84. 16 Sha M, Xiong X, Xu M R, et al. High Technology Fiber Application, 2017, 42(4), 37(in Chinese). 沙勐, 熊欣, 许名瑞, 等. 高科技纤维与应用, 2017, 42(4), 37. 17 Zhang Y, Vassilopoulos AP, Keller T. Composites Science and Technology, 2009, 69(7), 1022. 18 Kawai M, Yagihashi Y, Hoshi H, et al. Advanced Composite Materials, 2013, 22(2), 79. 19 ASTM D3039 standard test method for tensile properties of polymer matrix composite materials, West Conshohocken, PA, ASTM International, 2008. 20 ASTM D3479 standard test method for tension-tension fatigue of polymer matrix composite materials, West Conshohocken, PA, ASTM Internatio-nal, 2007. 21 Liu Y Z. Fatigue behavior of composite laminates. Master's Thesis, Harbin Institure of Technology, China, 2015(in Chinese). 刘英芝. 复合材料层合板疲劳行为研究. 硕士学位论文, 哈尔滨工业大学, 2015. 22 Shokrieh M M, Lessard L B. Journal of Composite Materials, 2000, 34(13), 1056. 23 Tsai S W. Composite design(4th Edition), Think Composites, USA, 1988.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2021, Vol. 35 
