The design and materials of wind turbine blades are crucial in terms of performance and durability. They are an essential part of the energy sector. In this article, we use the Multi-Criteria Decision Making (MCDM) method to suggest a material selection method for the face sheet for a sandwich shell/web for wind turbine blades. To determine the best material out of all the options, the MCDM method allows the evaluation of multiple criteria. The suggested method takes into account a number of things, including weight, price, mechanical qualities, and environmental impact. Aluminium, Carbon Fibre Reinforced Polymer, and Glass Fibre Reinforced Polymer were the materials assessed in this study. According to the MCDM results, CFRP is the best material for a wind turbine sandwich shell or web's face sheet when taking the chosen criteria into account. The suggested strategy offers a method for selecting materials that is systematic and all-inclusive and can be used in other fields and applications

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