Fatigue of fiberglass wind turbine blade materials

摘要: Fatigue behavior for a variety of generic materials used in wind turbine blades has been explored. Coupon testing was carried out under constant amplitude tensile fatigue loading to beyond 10[sup 7] cycles most materials. Unidirectional performed close expectations despite fiber misalignment. Materials with triaxial (0/[plus minus]45) reinforcement showed greater sensitivity than expected, but lifetime trends flattened at high cycles. The uniaxial and could be normalized single S-N trend each case. Results include the effects differing matrix materials, manufacturing methods, structure, ply terminations. were supplied by Phoenix Industries US Windpower.