Causes of wind turbine blades losing control

Why do wind turbine blades fail?

Multiple requests from the same IP address are counted as one view. A review of the root causes and mechanisms of damage and failure to wind turbine blades is presented in this paper. In particular, the mechanisms of leading edge erosion, adhesive joint degradation, trailing edge failure, buckling and blade collapse phenomena are considered.

What causes a wind turbine to stop working?

Apart from force majeure situations when the wind turbines cannot function anymore (lightning, tower hit by blade, transport damage, missing external parts), they listed interlaminar failure, transverse cracks from the trailing edge and on the blade surface, fatigue failure in the root connection as critical damage requiring the turbine to stop.

What are the damage mechanisms of wind turbine blades?

The authors identified the following damage mechanisms of wind turbine blades: ing off of the gelcoat from the skin. strength of the fatigue-damaged w ind turbin e blade. The specimens were loaded sequen- Figure 2. Results of the survey of blade service companies: Frequency of wind turbine blade failure

How are wind turbine blade failure mechanisms analyzed?

Generally, failure mechanisms of wind turbine blades are analyzed using the following main methods: Computational modelling of blade deformation and damage. Post-mortem analysis of failed or damaged blades (either test blades or blades taken from old or damaged wind turbines) is the most obvious approach to explore the blade failure mechanisms.

What are the defects in wind turbine blades?

life extension. defects in the failure mechanisms of wind turbine blades was discussed. The flaws can be classified as “design flaws” (e.g., plydrops) and manufacturing flaws. The manufactur- variability and voids in adhesive bonds, heterogeneities (resin rich regions and dry spots).

Do wind turbine blades erode?

Still, the erosion (as said) is most often observed and is the earliest observed damage mechanism of wind turbine blades (1…2 years after installation [ 19 ]), which can lead to a reduction in the annual energy production of wind turbines (5% and more) and a reduction in further damage in the laminates. 3.2. Tapered Areas and Plydrop