THE PERFORMANCE ANALYSIS OF CF/GF HYBRID COMPOSITES AND ITS APPLICATION IN WIND TURBINE BLADES

Abstract

Abstract: In this paper, through 11 groups of tensile comparative experimental samples, the tensile properties of C/G hybrid fiber-reinforced composites at different hybrid ratios were analyzed. The results show that with the relative volume percentage of carbon fibers in the C/G hybrid fibers increasing, the tensile strength and modulus of the HFRP increased, and the elongations of the HFRP decreased. By means of theoretical calculations, the economical benefits of the spar cap for 50m long wind turbine blades made of C/G hybrid fiber-reinforced composites were calculated. If the C/G hybrid fiber-reinforced composites were used to made the spar cap, the weight of the spar cap can be reduced by 10%~60% compared with using glass fibers, and the cost of the spar cap will be increased by 150%~310%. However, relative to single wind turbine blade the weight of the blade can be reduced by 4%~22%, the cost of overall wind turbines will equal or even be decreased.

Key words: C/G hybrid fiber-reinforced composites, tensile properties, wind turbine blades, spar cap, weight reduction

CLC Number:

WANG Hai-zhen, YAN Chen, Wang Xing-bo, SONG Qiu-xiang. THE PERFORMANCE ANALYSIS OF CF/GF HYBRID COMPOSITES AND ITS APPLICATION IN WIND TURBINE BLADES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(11): 67-71.

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