Reliability Analysis of Wind Turbine Blades for Fatigue Life under Wind Load Uncertainty

2012 ◽  
Author(s):  
Weifei Hu ◽  
Kyung Choi ◽  
Nicholas Gaul ◽  
Edward Hardee
Keyword(s):  
Fatigue Life ◽  
Wind Turbine ◽  
Reliability Analysis ◽  
Turbine Blades ◽  
Wind Load ◽  
Wind Turbine Blades ◽  
Load Uncertainty ◽  
Wind Load Uncertainty

Reliability analysis of wind turbine blades based on non-Gaussian wind load impact competition failure model

Measurement ◽  
2020 ◽  
Vol 164 ◽  
pp. 107950
Author(s):  
Qin Zhao ◽  
Yiping Yuan ◽  
Wenlei Sun ◽  
Xiaochao Fan ◽  
Panpan Fan ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Reliability Analysis ◽  
Turbine Blades ◽  
Wind Load ◽  
Failure Model ◽  
Wind Turbine Blades ◽  
Non Gaussian ◽  
Load Impact

Effects of shallow angle on static strength and fatigue life of multi-directional laminates for wind turbine blades

2016 ◽  
Vol 51 (18) ◽  
pp. 2549-2563 ◽  
Author(s):  
Sung Kyu Ha ◽  
Alvaro Gorostidi Martinez de Lece ◽  
Carlos Donazar Moriones ◽  
Carlos Alberto Cimini Junior ◽  
Chengzhu Jin
Keyword(s):  
Fatigue Life ◽  
Wind Turbine ◽  
Turbine Blades ◽  
Failure Criteria ◽  
Static Strength ◽  
Experimental Results ◽  
Multiscale Approach ◽  
Wind Turbine Blades ◽  
Static Tests ◽  
Angle Effect

The effects of the shallow angle on the static strength and the fatigue life of the multi-directional glass fiber-reinforced plastics for wind turbine blades were presented based on experimental results and predictions. The static tests and the tension–tension fatigue tests under cyclic fatigue loads with a stress ratio of 0.1 were performed on bi-axial (BX, [±θ]), tri-axial 1 (TA, [0/±θ2]), and tri-axial 2 (TX, [02/±θ]) laminates with ply angles θ of 25°, 35°, and 45°. A multiscale approach was applied to predict the static tensile and compressive strengths and the S–N curves of BX, TA, and TX laminates based on the constituents: fiber, matrix, and interface. Three ply-based failure criteria (Hashin, Puck, and Tsai–Wu) were also employed to predict the static strength and compare with the experimental results. The predictions and the experimental results show that the tensile strength increases as θ becomes shallower, while laminates with a shallow ply angle of 35° showed similar or even lower compressive strengths, especially for TA and TX laminates. The laminate fatigue life increases as θ becomes shallower. The shallow angle effect on strength and fatigue life is greater for BX than TA and TX laminates since the ply angle θ plays a more important role in BX. By using the multiscale approach, the shallow angle effect on the laminate static and fatigue behaviors were also explained based on the ply stresses as well as the constitutive micro stresses.

scholarly journals The Effect of Ply Waviness for the Fatigue Life of Composite Wind Turbine Blades

2013 ◽  
pp. 1195-1199
Author(s):  
U.I.K. Galappaaththi ◽  
Anthony Pickett ◽  
Milos Draskovic ◽  
Mark Capellaro ◽  
A.M. De Silva
Keyword(s):  
Fatigue Life ◽  
Wind Turbine ◽  
Turbine Blades ◽  
Wind Turbine Blades
Sign in / Sign up

Export Citation Format

Share Document