The Role of Orientation and Temperature on the Mechanical Properties of a 20 Years Old Wind Turbine Blade GFR Composite.
The Role of Orientation and Temperature on the Mechanical Properties of a 20 Years Old Wind Turbine Blade GFR Composite.
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DOI：
10.3390/polym13071144
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发表时间：
2021-04-02
期刊：
影响因子：
5
通讯作者：
Ataya S
中科院分区：
文献类型：
--
作者：
Ahmed MMZ;Alzahrani B;Jouini N;Hessien MM;Ataya S
本研究对一台100千瓦风力发电机叶片的玻璃纤维增强聚合物（GFRP）材料的力学性能进行了评估，该叶片已达到20年的使用寿命。所调查的样品分别取自距转子轮毂1.6 m和5.4 m处未损坏区域的两个位置。进行了显微组织调查和铺层分析。研究样品的纤维重量分数在0.55 ~ 0.60之间。拉伸和压缩试验在- 10°C至+50°C的温度范围内进行，这些试样被加工成在叶片长度方向LD上加载，横向于叶片长度TD并偏离轴；与叶片长度成45°。在三个方向上测定了所研究的玻璃钢的拉伸弹性模量。纤维织物层数沿叶片长度方向减少，纤维密度沿叶片长度方向最高（858 gm/mm2），横向纤维密度最低（83 gm/mm2）。GFRP复合材料的微观结构表现出聚合物对纤维的良好润湿性，但在高密度纤维束处缺乏渗透，在基体中存在一定的生产孔隙。在室温和高温下的拉伸性能与叶片长度排列的样品的最高性能几乎相似。试样的抗压强度在横向方向最高，在叶片长度方向最低，且随着试验温度的升高而降低。纤维取向对弯曲性能有显著影响，与叶片长度成一直线的弯曲性能最高，与叶片长度成一直线的弯曲性能最低。
This work evaluates the mechanical properties of the glass fiber reinforced polymer (GFRP) material taken from an out of service 100 KW power wind turbine blade which has been in service life of 20 years old. Investigated samples were taken from two positions of undamaged regions at 1.6 m and 5.4 m from the rotor hub, respectively. Microstructure investigation and lay-up analysis were carried out. Fiber weight fraction of the investigated samples was ranging between 0.55–0.60. Tensile and compression tests were carried out at the temperature range from −10 °C to +50 °C on specimens which were machined so as to be loaded in the blade length direction LD, transverse to the blade length TD and off axis; 45° to the blade length. Tensile elastic modulus of the investigated GFRP was determined in the three direction tested. The number of fiber fabric layers found to be decreasing along the blade length away from the root and the density of the fibers along the length is the highest (858 gm/mm2) and in the transverse direction is the lowest (83 gm/mm2). The microstructure of the GFRP composite showed good wetting for the fiber by the polymer with some features of lack of penetration at the high density fiber bundles and some production porosity in the matrix. The tensile Properties at room temperature (RT) and high temperature are almost similar with the highest properties for the samples aligned with the blade length. The compressive strength is highest at the transverse direction samples and lowest at the blade length direction and decreasing with the increase of the test temperature. The bending properties are significantly affected by the fiber orientation with the highest properties for samples aligned with the blade length and the lowest for the samples with the transverse direction.
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影响因子：
5.1
作者：
Abdel-Wahab, Adel A.;Ataya, Sabbah;Silberschmidt, Vadim V.
通讯作者：
Silberschmidt, Vadim V.
影响因子：
11.1
作者：
Kouloumpis, Victor;Sobolewski, Robert Adam;Yan, Xiaoyu
通讯作者：
Yan, Xiaoyu
影响因子：
6.3
作者：
Meng, Hang;Lien, Fue-Sang;Geiger, Paul
通讯作者：
Geiger, Paul
影响因子：
6.3
作者：
Liu, Hongwei;Zhang, Zhichun;Leng, Jinsong
通讯作者：
Leng, Jinsong
影响因子：
10.4
作者：
Habali, SM;Saleh, IA
通讯作者：
Saleh, IA