Two failed blades were broken from the root and from the airfoil. material for a turbine blade by comparing the results obtained for two materials i.e. The high-pressure turbine is, with the combustion chamber, very hot (more than the exhaust nozzle). Modern gas turbines have the most advanced and sophisticated technology in all aspects; construction materials are not the exception due their extreme operating conditions. A new initiative to recycle aging wind turbine blades includes the use of recycled glass fiber composites for cement manufacturing in a process that replaces raw material, saves energy and reduces CO2 output. Overview of Blade Design Composite materials are used typically in blades and nacelles of wind turbines. The blades on the early Whittle engine were attached by the de Laval bulb root fixing, but this design was soon superseded by the “fir-tree” fixing that is now used in the majority of gas turbine engines. So the main important thing is here is the blade cooling and strength due to high pressure. Gas turbines run most at extremely high temperatures and with high centrifugal pressures. Titanium content has increased from 3 % in 1950s to about 33% today of the aero engine weight. Land-based gas turbines as used in the power generation industry are in principle very similar, but larger, and the actual turbine (the last rows of blades in the engine) is not connected with the rest of the engine, but drives a generator. This paper aims at modeling a gas turbine blade which works at super-critical operating conditions using the alloys Ti-6Al-4V and the Alloy 1.2367. Materials development for gas turbine blades. Compressor blade materials for land based gas turbines 4. Composite Structures of Wind Turbines: Loads and Requirements 2.1. Exhaust nozzle: Nickel Inconel and stainless steel alloys. The material properties wereapplied according the calculation which is carried to thermal- stress simulation so the concept of this analysis is to be the complete combusted gas with high pressure and temperature will hit the turbine blade. Inconel 718 is considered as a best material after analysis. The metals used for turbine blades are often grown as a single crystal. The turbine blades are responsible for extracting energy from the high temperature gas produced by the combustor. The long fibers provide stiffness and strength while the polymer matrix supports the fibers by providing out-of-plane strength, flexibility, fracture toughness, and increased stiffness. From the early 50 s the technological developments of the gas turbine/compressor blades have been started. The air is taken from atmosphere and compressed into a compressor. Due to continuously heating in combustion chamber, pressure and temperature of air increases. Turbine blade mechanical properties: Gas turbines since there birth have always been limited in thrust and efficiency due to the availability of materials that can be used in the engine. I. Inconel 718 and titanium T6. The compressed air is passed through combustion chamber where it is heated. S. Alka et.al[5] designed blade in such a way that it produce maximum rotational energy by directing the flow of the gas along its surface. Swivels of level 1 and 2 turbines are cooled with air taken from level 16 compressors, channeled into the turbine rotor holes and out through small holes in the bases of turbine buckets level 1 and 2. the gas turbine (fan blades) and at higher temperatures (HP compressor). This … MATERIALS USED IN GAS TURBINE BLADES. For lower pressure turbine blades iron-based superalloy or even stainless steel. The sum of these four materials is the sum of the material used in the wind turbine blade. 2. C. Fibre et al. 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