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ISSN 2063-5346
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IMPLEMENTATION OF MULTI-CRITERIA DECISION METHOD FOR SELECTION OF REINFORCEMENT MATERIAL IN METAL MATRIX COMPOSITES FOR STEAM TURBINE BLADE

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Kale Dipak R, Dr. R R Arakerimath
» doi: 10.31838/ecb/2023.12.6.223

Abstract

A diverse reinforcement particle in a metal matrix composite gives the high strength and low density which encourages its use in the wide range of applications. The selection of foremost reinforcement material for a metal matrix composite is accomplished via a multi-criteria decision-making method for low pressure rotating steam turbine blade which is a critical component in the steam turbine system. Based on failure cases of the blade, the various required parameters are summarized. To overcome the difficulty of material selection against various required parameters, a multi-criteria decision-making method is used. A decision framework is suggested which divides a required parameters into strength, surface property, and vibration criteria. Especially Titanium metal matrix is appraised as a substrate material for strength criteria analysis. TOPSIS and VIKOR methods of multi-criteria decision-making analysis are applied. The rank of materials is compared and revealed that both methods give the same results for the first ten materials. The result of three criteria is analyzed and optimized reinforcement particles figured out are the B4C followed by CNT and SiC. The effect of SiC addition to the Ti and B4C on microstructure & hardness value is investigated. The elastic resilience is directly proportional to erosion rate which is dominant failure cause in steam turbine blade is evaluated.

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