Title :
Fatigue life estimation of large-scale composite wind turbine blades
Author :
Hayat, K. ; Asif, M. ; Ali, H.T. ; Ijaz, H. ; Mustafa, G.
Author_Institution :
Dept. of Mech. Eng., Univ. of Lahore, Raiwind, Pakistan
Abstract :
The fatigue life of a large-scale 5MW composite wind turbine blade is carried out in accordance with the simplified stress-based fatigue life estimation method recommended by Germanischer-Lloyd regulations. Two kinds of composite layups, ply-level and laminate-level, for the blade are developed and evaluated. The fatigue loads are computed from aero-servo-elastic simulations for the turbine power production conditions as per International Electrotechnical Commission 61400-1 standard. The discrepancy in the estimated fatigue life estimates for the ply-level and laminate-level composite layups is discussed.
Keywords :
IEC standards; blades; elasticity; estimation theory; fatigue; laminates; servomechanisms; wind turbines; Germanischer-Lloyd regulation; International Electrotechnical Commission 61400-1 standard; aeroservoelastic simulation; laminate-level composite layup; large-scale composite wind turbine blade; ply-level composite layup; power 5 MW; simplified stress-based fatigue life estimation method; turbine power production condition; Computational modeling; Estimation; Fatigue; Laminates; Load modeling; Safety; Welding;
Conference_Titel :
Applied Sciences and Technology (IBCAST), 2015 12th International Bhurban Conference on
Conference_Location :
Islamabad
DOI :
10.1109/IBCAST.2015.7058480
