采用微Raman光谱仪对碳纤维增强环氧树脂复合材料CF/EP(纤维体积分数为30%)的湿热残余应力进行了研究.实验结果表明:湿热残余应力能够使碳纤维Raman光谱发生频移,根据频移可对纤维所受湿热残余应力进行表征;选择合适的试验点是复合材料湿热残余应力Raman测试成功的关键;在湿热环境下长期吸湿,纤维所受轴向残余应力由吸湿前的热残余压应力转变成吸湿后的湿热残余拉应力;由吸湿后碳纤维所受湿热残余拉应力减去吸湿前热残余压应力获得的吸湿拉应力非常大,平均为2272 MPa,接近所用碳纤维的拉伸强度(2800 MPa);适当的加工热残余压应力有利于降低吸湿导致的应力.
参考文献
| [1] | 过梅丽,肇研,谢令.航空航天结构复合材料湿热老化机理的研究[J].宇航材料工艺,2002,32(4):51-54.Gun Meili,Zhao Yan,Xie Ling.Study on hygrothermal ageing mechanisms of aerospace structural composites[J].Aerospace Materials & Technology,2002,32(4):51-54. |
| [2] | Weitsman Y J.Fatigue of composite materials[M].New York:Elsevier,1991. |
| [3] | Jones F R.Reinforced plastics durability[M].Cambridge,UK:Woodhead Publishing Company,1999. |
| [4] | Zheng Q,Morgan R J.Synergistic thermal-moisture damage mechanisms of epoxies and their carbon-fiber composites[J].Journal of Composites Materials,1993,27(15):1465-1478. |
| [5] | Lee M C,Peppas N A.Models of moisture transport and moisture induced stresses in epoxy composites[J].Journal of Composite Materials,1993,27(12):1146-1171. |
| [6] | Pavankiran Vaddadi,Toshio Nakamura,Raman P Singh.Inverse analysis for transient moisture diffusion through fiberreinforced composites[J].Acta Materialia,2003,51(1):177-193. |
| [7] | 杨亚文.碳纤维环氧树脂复合材料的吸湿行为[J].机械制造,2005,43(2):71-72.Yang Yawen.Moisture absorption behavior of carbon fiber epoxy resin composite materials[J].Machinery,2005,43(2):71-72. |
| [8] | 王迎娜,王玉林,万雪飞.吸湿后三维编织复合材料的剪切性能研究[J].材料科学与工程学报,2003,21(5):674-678.Wang Yingna,Wang Yulin,Wan Xuefei.Studies on shear property of 3-D braided composites after moisture absorption behaviors[J].Journal of Materials Science & Engineering,2003,21(5):674-678. |
| [9] | 李铁骑,章明秋,曾汉民.用Raman光谱研究纤维复合材料[J].复合材料学报,1997,14(2):1-5.Li Tieqi,Zhang Mingqiu,Zeng Hanmin.Application of Raman spectroscopy in composite science[J].Acta Materiae Compositae Sinica,1997,14(2):1-5. |
| [10] | 曹莹,吴林志,张博明.碳纤维复合材料界面性能研究[J].复合材料学报,2000,17(2):89-93.Can Ying,Wu Linzhi,Zhang Boming.Investigation of interracial properties of composties reinforced by carbon fiber[J].Acta Materiae Compositae Sinica,2000,17(2):89-93. |
| [11] | 张福勤,黄启忠,黄伯云,等.C/C复合材料石墨化度的拉曼光谱表征[J].无机材料学报,2003,18(2):361-366.Zhang Fuqin,Huang Qizhong,Huang Baiyun,et al.Characterization of graphitization degree of C/C composites by laser Raman microspectroscopy[J].Journal of Inorganic Materials,2003,18(2):361-366. |
| [12] | Leveque D,Auray M H.Study of carbon-fibre strain in model composites by Raman spectroscopy[J].Composites Science and Technology,1996,56(7):749-754. |
| [13] | Bncci D V,Koczak M J,Schadler L S.Micromechanical investigations of unidirectional carbon/carbon composites via micro-Raman spectroscopy[J].Carbon,1997,35(2):235-245. |
| [14] | Wood Jonathan R,Huang Yanling,Youngh Robert J,et al.Measurement of thermal stains during compressive fragmentation in single-fibre composites by Raman spectroscopy[J].Composites Science and Technology,1995,55(3):223-229. |
| [15] | Huang Yanlin,Young Robert J.Interracial micromechanics in thermoplastic and thermosetting matrix carbon fibre composites[J].Composites Part A,1996,27(10):973-980. |
| [16] | Varinder Chohan,Costas Galiotis.Interfacial measurements and fracture characteristics of 2D microcomposites using remote laser Raman microscopy[J].Composites Part A,1996,27(9):881-888. |
| [17] | 李刚.CFL/EP复合材料湿热残余应力的有限元计算及Raman光谱表征[D].天津:天津大学,2007:42-43.Li Gang.Study on hygrothermal residual stress of carbon fiber/epoxy resin composites with finite element analysis and micro-Raman spectroscopy characterization[D].Tianjin:Tianjin University,2007:42-43. |
| [18] | Chaudhuri Scanwat N,Chaudhuri Reaz A,Benner Robert E,et al.Raman spectroscopy for characterization of inerfacial debonds between carbon fibers and polymer matrices[J].Composites Structures,2006,76(4):375-387. |
| [19] | Wang Xiaojun,Chnng D D L.Self-monitoring of fatigue damage and dynamic strain in carbon fiber polymer-matrix composite[J].Composite Part B,1998,29(1):63-73. |
| [20] | 岑皓.微拉曼光谱法在微尺度力学测量中的若干应用[D].天津:天津大学,2006:29-30.Chen Hap.Applications of micro-Raman spectroscopy in microscale mechanical test[D].Tianjin:Tianjin University,2006:29-30. |
| [21] | 孙丽,黄远,万怡灶,何芳,王玉林.碳/环氧树脂复合材料吸湿水分浓度场的有限元分析[J].兵器材料科学与工程,2007,30(4):5-8.Sun Li,Huang Yuan,Wan Yizao,He Fang,Wang Yulin.Finite element analysis of moisture distribution within carbon fiber reinforced epoxy composite[J].Ordnance Material Science and Engineering,2007,30(4):5-8. |
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