Comparison of Multi-Criteria Decision Making Methods for Multi Optimization of GTAC Process Parameters

Rajeev Ranjan,Anil Kumar Das,Abhijit Saha

doi:10.3311/ppme.19835

Abstract

A great deal of investigation on gas tungsten arc cladding (GTAC) is focused on the study of enhancements in the microstructure, mechanical and tribological features of the cladding. The selection of right process parameters is a critical issue for the researchers. Decision makers in the industries must analyze a wide variety of parameters based on a set of contradictory criteria. Several multi-criteria decision-making (MCDM) techniques are now available to add values in selection of these parameters. The application of the TOPSIS and MOORA techniques to identify the best configuration of processing parameters in the gas tungsten arc cladding (GTAC) process is investigated in this work. The best processing parameters set for the multiple performance attributes should be welding current: 70 amp, speed: 240, argon flow: 13 and standoff distance 3.5 (TOPSIS-PCA) and welding current: 50, speed: 300, argon flow: 13 and standoff distance 3.5 (MOORA-PCA).A comparison of MOORA-PCA and TOPSIS-PCA demonstrates the superiority of TOPSIS over MOORA technique. The prediction accuracy of the TOPSIS-PCA hybrid approach model is found better than MOORA-PCA technique.

Highlights

Wear, corrosion, fracture, and oxidation caused machine elements to weaken and fractured early in their intended lifespan
The best processing parameters set for the multiple performance attributes should be welding current: 70 amp, speed: 240, argon flow: 13 and standoff distance 3.5 (TOPSIS-Principal Component Analysis (PCA)) and welding current: 50, speed: 300, argon flow: 13 and standoff distance 3.5 (MOORA-PCA).A comparison of MOORA-PCA and TOPSIS-PCA demonstrates the superiority of TOPSIS over MOORA technique
The goal of this study is to find the optimal combination of processing parameters in gas tungsten arc cladding (GTAC) process using MOORA and TOPSIS

Summary

Introduction

Corrosion, fracture, and oxidation caused machine elements to weaken and fractured early in their intended lifespan. These are common issues in a wide range of industries, including mining, mineral processing, manufacturing, and agriculture. The degradation of component surfaces is caused by wear and corrosion, resulting in downtime and greater manufacturing costs. The weld cladding techniques can be used to boost the service life of wear and corrosion prone elements at a minimal cost by modifying their functional surfaces.There are various distinct types of weld cladding processes available today, each with its own set of benefits. Weld cladding has been applied in a variety of industrial uses, and there have been several advancements in this field over the last decade.

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