三维编织复合材料T型梁弯曲疲劳性能研究

摘要/Abstract

摘要： 采用四步法三维编织以及VARTM技术制得三维编织复合材料T型梁,利用MTS 810.23仪器对材料进行准静态三点弯曲测试,使用频率为3Hz、应力比R=1的正弦波加载条件对材料进行弯曲疲劳测试。根据测得的数据分析获得S-N曲线、应力位移曲线以及最大最小位移曲线,材料在50%应力水平下其三点弯曲疲劳加载循环次数超过50万次。通过最终破坏形态可知,筋高处纤维的断裂是导致材料最终失效的主要破坏模式。

关键词: 三维编织, T型梁, 弯曲疲劳, 破坏模式

Abstract: This paper reports the three-point bending fatigue behaviors of four-step 3D braided composite T-beam manufactured by four-step braiding technology and vacuum assisted resin transfer molding (VARTM). The fatigue failure of the braided composite T-beam under different stress levels have been represented to explain the fatigue behaviors.The quasi-static three-point bending tests were conducted on the MTS 810.23 material tester system, and the fatigue tests with the sinusoidal wave loading of frequency of 3 Hz and stress ratio (R) value of 0.1 were implemented on the same system. The S-N curve, stress-displacement curves and the max and min deflections curves based on experimental data were used for analysis, and the load cysles of three-point fatigue test under stress level of 50% was found tobe over 5×10⁵ times. The fiber breakage on the web is the main damage mode which leads the ultimate failure of the 3D braided composite T-beam according to the damage morphologies.

Key words: 3D braided, T-beam, bending fatigue, damage mode

中图分类号:

TB332

张中伟, 严静. 三维编织复合材料T型梁弯曲疲劳性能研究[J]. 复合材料科学与工程, 2014, 0(4): 42-45.

ZHANG Zhong-wei, YAN Jing. BENDING FATIGUE BEHAVIOR OF 3D BRAIDED COMPOSITE T-BEAM[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(4): 42-45.

参考文献

[1] 丁辛,易洪雷,顾伯洪,李毓陵,金宏彬,孙宝忠,杨旭东. 三维机织复合材料的弯曲疲劳和压缩性能[C]. 中国湖北宜昌:中国宇航出版社,2006. 48-51.
[2] 陈春露,刘文博,张璐,王荣国. 复合材料层合板分层疲劳性能研究进展[J]. 玻璃钢/复合材料,2012,1:83-86.
[3] 曹英斌,谢永强,周新贵,张长瑞.单向C_f/SiC复合材料的弯曲疲劳损伤-Ⅰ:横向基体裂纹 [C]. 中国天津: 2002. 809-813.
[4] 曹英斌,张长瑞,周新贵,陈朝辉. 单向C_f/SiC复合材料弯曲疲劳的模量变化[C]. 中国北京:冶金工业出版社,2000. 965-968.
[5] 张术华,谢永强,曹英斌,周新贵. 单向C_f/SiC复合材料的弯曲疲劳损伤-Ⅱ:疲劳损伤机理[C]. 中国天津: 2002. 814-818.
[6] 施晓霞, 李泽宏, 顾伯洪. 单向复合材料弯曲疲劳性能[J]. 纺织学报, 2002, 23(5):380-381.
[7] 李志君, 李学成. 高性能复合材料弯曲疲劳性能研究[J]. 高科技纤维与应用, 2004, 29(5):11-14.
[8] MALL S, WEIDENAAR W A. TENSION-COMPRESSION FATIGUE BEHAVIOR OF FIBER-REINFORCED CERAMIC-MATRIX COMPOSITE WITH CIRCULAR HOLE[J]. Composites, 1995, 26(9):631-636.
[9] 张阿樱,张东兴,李地红,杨蕤. 碳纤维/环氧树脂层压板疲劳性能研究进展[J]. 玻璃钢/复合材料, 2010, 6:70-74.
[10] 贾宝惠,李顶河,李伟,徐建新. 基于疲劳损伤两段论的复合材料刚度降解模型研究[J]. 玻璃钢/复合材料, 2010, 1:16-19.
[11] REN J, LI K, ZHANG S, et al. Dynamic fatigue of two-dimensional carbon/carbon composites[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, 2013, 570:123-126.
[12] TSAI K H, CHIU C H, WU T H. Fatigue behavior of 3D multi-layer angle interlock woven composite plates[J]. Composites Science and Technology, 2000, 60(2):241-248.
[13] REIS P N B, FERREIRA J A M, COSTA J D M, et al. Fatigue life evaluation for carbon/epoxy laminate composites under constant and variable block loading[J]. Composites Science and Technology, 2009, 69(2):154-160.
[14] RUDOV-CLARK S, MOURITZ A P. Tensile fatigue properties of a 3D orthogonal woven composite[J]. Composites Part a-Applied Science and Manufacturing, 2008, 39(6):1018-1024.
[15] CHEN J. Simulation of multi-directional crack growth in braided composite T-piece specimens using cohesive models[J]. Fatigue and Fracture of Engineering Materials and Structures, 2011, 34(2):123-130.
[16] CHEN J, RAVEY E, HALLETT S R, et al. Prediction of delamination in braided composite T-piece specimens[J]. Composites Science and Technology, 2009, 69(14):2363-2367.
[17] 张继伟. 三维混杂针织复合材料T型梁横向冲击响应[D]. 中国上海:东华大学, 2009.
[18] 郑锡涛, 屈天骄. 三维编织复合材料制造技术及力学性能研究进展[J]. 航空制造技术, 2011, 20:40-44.