Experimental observation of fatigue degradation in a composite wind turbine blade. (15th March 2019)

• Record Type: Journal Article
• Authors: Chen, Xiao
• Is Part Of: Composite structures. Volume 212(2019)
• Page Start: 547
• Page End: 551
• Publication Date: 2019-03-15
• Subjects: Fatigue degradation -- Torsional mode -- Damping -- Matrix crack -- Damage -- Composite blade; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2019.01.051
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: This study reports experimental observation of structural degradation in a composite wind turbine blade subject to fatigue loading. The fatigue test is carried out according to the test standard for the blade certification. The changes of bending stiffnesses, natural frequencies and damping ratios due to fatigue are examined and discussed. The study provides the first of this kind observation on full-scale composite rotor blades in the literature.