摘要
纤维混杂是一种实现纤维增强树脂基复合材料性能与价格平衡的有效策略,碳/玻混杂织物(GCHF)是典型的纤维混杂实例。复合材料的疲劳性能是工程化应用的必要考核指标。本文以风力发电叶片梁帽用复合材料为研究对象,制备了4种不同混杂比例的单向GCHF增强环氧树脂基复合材料,基于对其静态拉伸性能的研究,扩展到动态拉-拉疲劳(R=0.1)性能,并与纯玻纤和纯碳纤增强环氧树脂基复合材料作对比。实验数据表明,高周疲劳下,GCHF增强环氧树脂基复合材料的疲劳性能符合线性混合定律,但是低周疲劳下误差相对较大。为叶片设计选材提供了一种简便快速估算GCHF增强环氧树脂基复合材料疲劳性能的方法。
Fiber hybridization is an effective solution to achieve a completive material with balanced price and properties.Glass/carbon hybridized fabric(GCHF)is the typical example.Fatigue performance is one of the key material parameters of composites for engineering applications.In this paper,the material for spar caps manufacturing of wind blade were used as research subject.Four different carbon ratio uni-directional GCHF were chosen to make hybrid composites,and both static and fatigue test(R=0.1)were carried out.Moreover,pure glass and pure carbon were also tested for comparison.It was demonstrated that high-cycle fatigue of GCHF reinforced composites correspond to the linear rule of mixtures well,but low-cycle fatigue is relatively worse.Based on the experimental study,a fast way of GCHF reinforced composites fatigue properties prediction has been achieved.
作者
许经纬
顾嫒娟
XU Jing-wei;GU Ai-juan(College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China)
出处
《复合材料科学与工程》
CAS
北大核心
2020年第4期39-45,共7页
Composites Science and Engineering
基金
国家自然科学基金(51875135)。
