eprintid: 6400
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/64/00
datestamp: 2023-11-09 16:18:11
lastmod: 2023-11-09 16:18:11
status_changed: 2023-11-09 16:05:56
type: article
metadata_visibility: show
creators_name: Dewangan, S.
creators_name: Gangopadhyay, S.
creators_name: Biswas, C.K.
title: Study of surface integrity and dimensional accuracy in EDM using Fuzzy TOPSIS and sensitivity analysis
ispublished: pub
keywords: Cracks; Decision making; Design of experiments; Electric discharge machining; Electric discharges; Steel; Surface defects; Surface roughness; Tool steel; Tools, AISI P-20 tool steel; Electrical discharge machining; FUZZY TOPSIS; Multi-criteria decision making; Optimal machining parameters; Response surface methodology; Simultaneous optimization; White layer thickness, Sensitivity analysis
note: cited By 105
abstract: Surface integrity and dimensional accuracy remain critical concern in Electrical Discharge Machining (EDM). The current research work aims at investigating the influence of various EDM process parameters like pulse current (Ip), pulse-on time (Ton), tool work time (Tw) and tool lift time (Tup) on various aspects of surface integrity like white layer thickness (WLT), surface crack density (SCD) and surface roughness (SR). The dimensional accuracy, characterized by over cut (OC), has also been studied in the similar way. A response surface methodology (RSM) - based design of experiment has been considered for this purpose. The present study also recommends an optimal setting of EDM process parameters with an aim to improve surface integrity aspects after EDM of AISI P20 tool steel. This has been achieved by simultaneous optimization of multiple attributes (i.e. WLT, SCD, SR and OC) using Fuzzy-TOPSIS-based multi-criteria decision making (MCDM) approach. The optimal solution was obtained based on five decision makers' preferences on the four responses (i.e. WLT, SCD, SR, and OC). From this analysis, an optimal condition of process parameters of Ip = 1 A, Ton = 10 μs, Tw = 0.2 s, and Tup = 1.5 s has been determined. Furthermore, sensitivity analysis was also carried out to study the sensitivity or robustness of five decision makers' preference of optimal machining parameters. Form this study, decision makers' preference for surface crack density has been found to be the most sensitive response and therefore should be chosen first and analyzed very carefully. © 2014 Elsevier Ltd. All rights reserved.
date: 2015
publisher: Elsevier B.V.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921715111&doi=10.1016%2fj.measurement.2014.11.025&partnerID=40&md5=d880197b9336a229cd6a06df0cc8902a
id_number: 10.1016/j.measurement.2014.11.025
full_text_status: none
publication: Measurement: Journal of the International Measurement Confederation
volume: 63
pagerange: 364-376
refereed: TRUE
issn: 02632241
citation:   Dewangan, S. and Gangopadhyay, S. and Biswas, C.K.  (2015) Study of surface integrity and dimensional accuracy in EDM using Fuzzy TOPSIS and sensitivity analysis.  Measurement: Journal of the International Measurement Confederation, 63.  pp. 364-376.  ISSN 02632241