Application of MOORA & COPRAS integrated with entropy method for multi-criteria decision making in dry turning process of Nimonic C263

Abstract

This article presents an integrated multi-criteria decision making using Entropy, MOORA and COPRAS methods for turning Nimonic C263. Experiments were performed under L27 Taguchi orthogonal array. Dry turning was performed and cubic boron nitride (CBN) was used to turn the alloy. The variables speed, feed and depth of cut were chosen as factors. For each experiment, the shear force component was measured during on line. The insert flank wear was measured after every experiment. The main objective of this paper is to identify the suitable trial to ensure minimum force and flank wear simultaneously. Because of the cost reduction and quality improvement, the controlling factors level should be selected appropriately. Hence, the integrated MCDM technique using MOORA, COPRAS and Entropy was chosen to determine the best experiment out of 27 experiments. Alternatives were ranked and the results were evaluated. The best experiment for minimization of force and flank wear is found to be 125 m/min, 0.055 mm/rev and 0.25 mm. The experimental test were observed with lesser deviation and confirmed that proposal found is more suitable to obtain minimum force and flank wear.

An integrated model for rice supplier selection strategies and a comparative analysis of fuzzy multicriteria decision-making approaches based on the fuzzy entropy weight method for evaluating rice suppliers

“…These weights are then applied to the PLOS ONE FMOORA, FCOPRAS, and hybrid FMOORA-FCOPRAS MCDM methods. The process of determining the weights of the criteria using the entropy method is as follows [47,48]:…”

“…This study proposes a fuzzy COPRAS method for supplier evaluation that can be applied to the SSP logically and efficiently. As with MOORA, we modify the FCOPRAS steps to demonstrate how the mathematical concept of FCOPRAS operates [48,[54][55][56][57][58][59].…”

“…These are used as fuzzy MCDM techniques to evaluate the weight of each criterion and importance of alternatives. These methods are derived from the FMOORA and FCOPRAS approaches [25,[48][49][50][51][52][53][54][55][56][57][58][59][60][61]. The integrated methods are discussed in detail in the subsequent sections.…”

Parametric assessment of surface behavior and the impact of heat in micro drilling of fiber laser machined AISI h13

“…Because each criterion has a different relevance, it may be assigned weight based on the Entropy method. 30…”

“…Because each criterion has a different relevance, it may be assigned weight based on the Entropy method. 30 In terms of relative weights, the direct and proportional values of the significant and utility metrics were evaluated. Best-to-worst choices were identified based on the highest and lowest utility degree values.…”