Implementation of a Biaxial Resonant Fatigue Test Method on a Large Wind Turbine Blade [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 621.822 Bearings
• Thông tin xuất bản: Golden, Colo. : Oak Ridge, Tenn. : National Renewable Energy Laboratory (U.S.) ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2014
• Mô tả vật lý: Size: 52 pp. : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 258686
• Chủ đề: 1. 17 wind energy; 2. Biaxial; 3. Fatigue test; 4. Single axial; 5. Wind turbine testing

Tóm tắt

 A biaxial resonant test method was utilized to simultaneously fatigue test a wind turbine blade in the flap and edge (lead-lag) direction. Biaxial resonant blade fatigue testing is an accelerated life test method utilizing oscillating masses on the blade
  each mass is independently oscillated at the respective flap and edge blade resonant frequency. The flap and edge resonant frequency were not controlled, nor were they constant for this demonstrated test method. This biaxial resonant test method presented surmountable challenges in test setup simulation, control and data processing. Biaxial resonant testing has the potential to complete test projects faster than single-axis testing. The load modulation during a biaxial resonant test may necessitate periodic load application above targets or higher applied test cycles.