通过风电叶片复合材料Ⅱ型分层扩展力学性能实验,并借助声发射技术手段,研究复合材料[0/0]、[0/45]和[+45/-45]层间界面损伤演化特性.复合材料试件弯曲加载时,采用声发射实时监测整个分层损伤过程.结果表明,[0/0]复合材料分层试件裂纹扩展快、分层面积大、前沿平齐,不稳定扩展对应较多高幅值、长持续时间的声发射信号;受±45°方向纤维作用,[0/45]和[+45/-45]复合材料试件不稳定分层扩展前声发射撞击累积数较高,裂纹扩展相对缓慢,分层面积小,前沿不齐.复合材料分层损伤演化可分为预分层裂纹尖端区域微损伤累积和分层不稳定扩展两个基本的过程.
参考文献
| [1] | 王耀东,何景武,夏盛来.复合材料叶片结构设计中的几个关键问题探讨[J].玻璃钢/复合材料,2012(01):34-38. |
| [2] | H. Ghasemnejad;L. Occhineri;D.T. Swift-Hook .Post-buckling failure in multi-delaminated composite wind turbine blade materials[J].Materials & design,2011(10):5106-5112. |
| [3] | Barrett J D;Foschi R O .Mode Ⅱ stress intensity factors for cracked wood beams[J].Engineering Fracture Mechanics,1977,9(2):371-378. |
| [4] | 于志成.复合材料Ⅱ型层间断裂韧性试验方法研究[J].航空材料学报,1997(04):54. |
| [5] | 孙先念,陈浩然,苏长健,刘相斌.含分层损伤复合材料层合板分层扩展研究[J].力学学报,2000(02):223-232. |
| [6] | Szekrényes, A. .Interlaminar stresses and energy release rates in delaminated orthotropic composite plates[J].International Journal of Solids and Structures,2012(18):2460-2470. |
| [7] | Segurado J;Llorca J .A new three-dimensional interface finite element to simulate fracture in composites[J].International Journal of Solids and Structures,2004(11/12):2977-2993. |
| [8] | A. Turon;C.G. Davila;P.P. Camanho .An engineering solution for mesh size effects in the simulation of delamination using cohesive zone models[J].Engineering Fracture Mechanics,2007(10):1665-1682. |
| [9] | 刘德博,关志东,李星,何为.基于界面单元的复合材料Ⅱ型层间损伤分析[J].复合材料学报,2012(05):151-156. |
| [10] | 汪星明;郭耀红;朱庆友;柳泽 .复合材料无损检测研究进展[J].玻璃钢/复合材料,2012,S1:261-265. |
| [11] | Hajikhani, M.;Ahmadi, M.;Farjpour, M.;Oskouei, A.R.;Sharifi, A. .Strain energy release rate assessment in mode i delamination of foam core sandwich composites by acoustic emission[J].Journal of Composite Materials,2011(22):2271-2277. |
| [12] | Dutton A G;Blanch M;Vionis P et al.Acoustic emission monitoring from wind turbine blades undergoing static and dynamic fatigue testing[J].INSIGHT,2000,42(12):805-808. |
| [13] | Goutham R. Kirikera;Vishal Shinde;Mark J. Schulz;Mannur J. Sundaresan;Scott Hughes;Jeroen van Dam;Francis Nkrumah;Gangadhar Grandhi;Anindya Ghoshal .Monitoring Multi-Site Damage Growth During Quasi-Static Testing of a Wind Turbine Blade using a Structural Neural System[J].Structural health monitoring,2008(2):157-173. |
| [14] | 李艳菲,李敏,顾轶卓,张佐光.风电叶片用真空灌注型环氧树脂及其复合材料性能研究[J].玻璃钢/复合材料,2012(04):109-114. |
| [15] | Carlsson L A;Gillespie J W;Pipes R B .On the analysis and design of the end notched flexure (ENF) specimen for mode Ⅱ testing[J].Journal of Composite Materials,1986,20(6):594-604. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%