Analysis of multi objective optimisation using TOPSIS method in EDM process with CNT infused copper electrode

Raj, S. Oliver Nesa; Prabhu, S.

doi:10.1504/ijmmm.2017.081190

Cited by 18 publications

(7 citation statements)

References 7 publications

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“…The authors reported an increase in the tool wear rate with increasing discharge current. Raj and Prabhu [37] infused carbon nanotubes (CNT) on copper electrodes and compared EDMachinability of AISI D2 steel with copper electrodes. Workpiece surface quality improvement was observed with the addition of CNT.…”

Section: Edm Of Metals and Their Alloysmentioning

confidence: 99%

Materials used for sinking EDM electrodes: a review

Czelusniak

Higa

Torres

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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Over the years, sinking electrical discharge machining has become one of the most important production technologies to manufacture very accurate three-dimensional complex components on any electrically conductive material. This article reports a literature review on the diversity of conventional and non-conventional materials that are used or have potential to be used as EDM electrodes. In addition, additive manufacturing of EDM electrodes are also reviewed. Keywords Sinking electrical discharge machining • EDM electrodes • Materials for electrodes • Additive manufacturing List of symbols î e Discharge current (A) t 0 Pulse interval time (μs) p in Dielectric inlet pressure (Pa) t d Ignition delay time (μs) t e Discharge duration (μs) t i Pulse duration (μs) t p Pulse cycle time (μs) u e Discharge voltage (V) û i Open-circuit voltage (V) V e Electrode wear rate (mm 3 /min) V w Material removal rate (mm 3 /min) W e Discharge energy (J)

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Section: Edm Of Metals and Their Alloysmentioning

confidence: 99%

Materials used for sinking EDM electrodes: a review

Czelusniak

Higa

Torres

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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“…In addition to that discharge current, Ton, magnetic field are the other factors which significantly increase the microhardness. For optimisation of multi objectives like tool wear rate, surface finish, and MRR, Raj & Prabhu [18] used analytic hierarchy process (AHP) and TOPSIS approach; they reported that this approach is viable for optimising any kind of issues even with multiple responses. Dielectric fluid occupies a significant role in defining the parts quality.…”

Section: Introductionmentioning

confidence: 99%

Investigations on the effect of dielectric medium and WEDM parameters on surface characteristics of Al 7068 (ordnance aluminium) alloy

SHARMILA¹,

Selvakumar²,

S³

2022

Surf. Topogr.: Metrol. Prop.

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The current experimental work focuses on determining the optimum machining parameter combination for machining AA7068 in wire electrical discharge machining (WEDM). WEDM is a promising advanced machining technology, capable of processing complex-shaped components, machining hard/heat treated materials, and cutting conductive ceramics that are complicated to machine using traditional methods. Taguchi’s L18 orthogonal array is adopted to conduct the experiments by considering dielectric medium, pulse on time, pulse off time, peak current, gap voltage, and wire feed as input factors. The output responses like surface roughness, material removal rate, micro hardness, recast layer, surface morphology of the machined surfaces and wire tool were considered for study. The ANOVA method was used to analyse the impact of individual processing parameters on material removal rate and surface roughness. Micro hardness of the cut surface was studied using Vicker’s method. Besides, scanning electron microscopy (SEM) and Energy Dispersive X-Ray analysis are conducted to examine the surface characteristics and elemental composition of the machined working piece at various cutting parameters (EDX). TOPSIS method is chosen to identify the optimal parametric conditions. From the results, the optimum condition achieves surface roughness (3.684 µm) and material removal rate (5.106 mm3/min) respectively.

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“…The importance of multi-response optimization and selections of new yet important process parameters which are not extensively investigated and affect the responses will prove useful to micromachining of gears. Based on the literature survey, it has been observed that TOPSIS methodology may prove to be effective to perform optimization on multi responses of WEDM process by using important process parameters and by addition dielectric fluid as one of them [43].…”

Section: Introductionmentioning

confidence: 99%

Multiple Response Optimization of Dimensional Accuracy of Nimonic Alloy Miniature Gear Machined on Wire Edm Using Entropy Topsis Andpareto Anova

Chaudhary¹,

Siddiquee²,

Chanda³

et al. 2021

Computer Modeling in Engineering &Amp; Sciences

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The purpose of this research is to obtain the optimum cutting parameters to achieve the dimensional accuracy of Nimonic alloy miniature gear manufactured using Wire EDM. The cutting parameters investigated in this study are current, pulse on time (PON), pulse off time (POFF), wire tension (WT) and dielectric fluids. Ethylene glycol, nanopowder of alumina and oxygen are mixed to demineralized water to prepare novel dielectric fluids. Deviation in inner diameter, deviation in outer diameter, deviation in land and deviation in tooth width are considered to check the dimensional accuracy. Taguchi L 16 is employed for experimental design and multiple response optimization is performed using Entropy TOPSIS and Pareto ANOVA. Results indicate that pulse on time is the most notable parameter for good dimensional accuracy followed by dielectric fluid, current, pulse off time and wire tension. Ethylene glycol mixed demineralized water is preferred for low dimensional deviation. The optimum WEDM parameters are pulse on time at 20 μs, Ethylene glycol mixed demineralized water dielectric fluid, current at 3 A, pulse off time at 4 μs, and wire tension at 18 N.

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Analysis of multi objective optimisation using TOPSIS method in EDM process with CNT infused copper electrode

Cited by 18 publications

References 7 publications

Materials used for sinking EDM electrodes: a review

Materials used for sinking EDM electrodes: a review

Investigations on the effect of dielectric medium and WEDM parameters on surface characteristics of Al 7068 (ordnance aluminium) alloy

Multiple Response Optimization of Dimensional Accuracy of Nimonic Alloy Miniature Gear Machined on Wire Edm Using Entropy Topsis Andpareto Anova

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