The Material Selection for Typical Wind Turbine Blades Using a Madm Approach& Analysis of Blades

Over the centuries, energy has been supplied by wood, coke, coal, oil and natural gas, as well as by uranium (nuclear energy). All these energy sources are limited and at the same time these energy sources create pollution problems. This has led to the focus on a sustainable energy supply, which implies optimized use of energy, minimized pollution. That is why wind energy is prominent and it is the solution to the global energy problem. The wind energy is generated by using wind turbines. The turbine blades plays very important role in the wind turbines. The efficiency of the wind turbine depends on the material of the blade, shape of the blade and angle of the blade. So, the material of the turbine blade plays a vital role in the wind turbines. The material of the blade should possess the high stiffness, low density and long fatigue life. The main objective of our topic is to discuss the different materials as candidates for turbine blades and to select the best material for turbine blades by using one of the MADM (Multiple Attribute Decision Making) approach with fuzzy linguistic variables. After the material selection, the turbine blades are created by using modeling packages (CATIA V5R9) and Analysis can be done by using FEM for different configurations, different operating conditions, in different cases were taken up to estimate the values of deformations, stress values and different frequency sets by altering the thickness of blade and angle of twist.