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Application of carbon fiber sandwich foam in wind turbine blades

Application of carbon fiber sandwich foam in wind turbine blades

Update:2022-12-22
Summary: 1. Improve blade stiffness and reduce blade quality The de...
1. Improve blade stiffness and reduce blade quality
The density of carbon fiber sandwich foam is about 30% lower than that of glass fiber, and its strength is 40% higher, especially the modulus is 3-8 times higher. The large blade is reinforced with carbon fiber, which can give full play to its advantages of high elasticity and light weight.
2. Improve the anti-fatigue performance of the blade
The fan is always in a harsh environment and is in working condition 24 hours a day. This makes the material vulnerable to damage. Relevant studies have shown that carbon fiber composite materials have outstanding anti-fatigue properties. When mixed with resin materials, they become one of the materials for wind turbines to adapt to harsh weather conditions.
3. Make the output power of the fan smoother and more balanced, and improve the efficiency of wind energy utilization
After using carbon fiber, the reduction of the mass of the blade and the increase of the stiffness improve the aerodynamic performance of the blade, reduce the load on the tower and the axle, so that the output power of the fan is smoother and more balanced, and the energy efficiency is improved. At the same time, the carbon fiber blades are thinner, the shape design is more effective, and the blades are more slender, which also improves the energy output efficiency.
4. Low wind speed blades can be manufactured
The application of carbon fiber can reduce the load and increase the length of the blade, so as to manufacture large-diameter blades suitable for low wind speed areas and reduce the cost of wind energy.


5. Use electrical conductivity to avoid lightning strikes
Utilizing the conductive properties of carbon fiber and through special structural design, it can effectively avoid damage to blades caused by lightning strikes.
6. Reduce the manufacturing and transportation costs of wind turbine blades
Due to the reduction in the application of materials, the application of fiber and resin is reduced, the blade becomes lighter, the manufacturing and transportation costs are reduced, and the size of the factory and the transportation equipment can be reduced.
7. With vibration damping characteristics
The vibration damping properties of carbon fiber avoid any possibility of resonance between the natural frequency of the blade and the transient frequency of the tower.