A Decision Analysis Model for Gear Material Selection Using MCDM Techniques

Abstract

Choosing the appropriate material for a particular engineering component is crucial as it greatly influences its design and ensures its proper functioning. When it comes to designing functional components for machines, using the highest quality materials is imperative. Decision-makers tasked with selecting materials must consider a range of factors, including physical, thermal, and mechanical properties, as well as the form, cost, and availability of materials. Among these variables, mechanical characteristics stand out as particularly crucial when choosing materials for machine elements. Making an inappropriate or incorrect selection can lead to product failure and substantial financial losses. Gears play a pivotal role in geared drives found in various machines and systems. Therefore, it is essential for manufacturers to design and produce gears that meet functional requirements and operating conditions. The objective of this study is to assess different gear materials with the aim of identifying the optimal material for gears. In the first phase, the application of EWM applied for the determination of criteria weightage and then integrated with TOPSIS method in second phase for determination of raking of all alternatives materials. Keywords: Gears material, MCDM, EWM, TOPSIS