Wind Turbine
Transcript: -Function: Provide aerodynamics to wind turbine. - Material: High density polyethylene (HDPE). -Constraints: It has to be easily shaped, it has to be stiff and strenght enough, it has to handle corrosion (water, salt water, oxidation, UV-radiation) and wide temperature range (-60 -> 60C). -Objectives: Low price and weight, Eco-friendly, Easy to manufacture - Function: Collect wind to spin turbine generator. - Material: Carbon fibre, glassfibre, glassfiber reinforced polymer composite. -Constraints: High tensile strength, Corrosion resistance (water, salt water, oxidation, UV), High fracture toughness, Low density, White and Smooth surface, Slightly lower E, for flexibility, Temperature: -60 -> 60C It also must handle high radial forces without breaking. -Objectives: Low price, Eco-friendly, Easy to manufacture - Function: Provide shield against weather for inner components. - Material: Low density polyethylene (LDPE). -Constraints: It has to be corrosive resistance (water, salt water, oxidation, UV-radiation), it has to handle temperatures between -60 and 60C, it has to be easy to manu- facture and it has to be stiff and strenght enough. -Objectives: Low weight and price. - Objectives: Low price, and zinc coating provides good corrosion resistance. Nose Cone Housing Blades Bolts Selection of materials for a house-hold wind turbine - Constraints: Low carbon steel has the required stiffness, strength and hardness required to hold the turbine structure to the foundation. - Material: Low carbon steel, galvanized with zinc (properly galvanized steel bolts can survive outdoors for 30-40 years, CES Edupack2011)