Grey-taguchi Based Optimizationof EDM Process for Titanium Alloy

Priyadarshini, Manisha; Pal, Kamal

doi:10.1016/j.matpr.2015.07.188

Cited by 26 publications

(13 citation statements)

References 13 publications

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“…Step 5: The criterion information (Cj) is calculated by multiplicative formulae of Equations (13) and (14).…”

Section: Criteria Importance Through Criteria Inter-correlation (Critic)mentioning

confidence: 99%

“…Table 12 also presents the standard deviation values associated with each quality characteristic estimated using Equation (13). The correlation coefficient of each criterion is determined using Equation (14). Table 13 presents the correlation coefficient values associated with different responses.…”

Section: Principal Component Analysismentioning

confidence: 99%

“…The electrical discharge machining (EDM) process has proven its effectiveness to generate complex profiles even for hard and brittle materials with fewer heat-affected zones and dimensional inaccuracies [11][12][13][14]. Performance characteristics (material removal rate (MRR), tool wear rate (TWR), and surface roughness (SR)) are influenced significantly by the variables, namely peak current, discharge energy, electrode material, dielectric fluid, plus on time, and other process parameters [15,16].…”

Section: Introductionmentioning

confidence: 99%

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Experimental Analysis and Optimization of EDM Parameters on HcHcr Steel in Context with Different Electrodes and Dielectric Fluids Using Hybrid Taguchi-Based PCA-Utility and CRITIC-Utility Approaches

Chandrashekarappa

Kumar

Pimenov

et al. 2021

Metals

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Industries demand stringent requirements towards economical machining without hindering the surface quality while cutting high carbon high chromium (HcHcr) steel. Electrical discharge machining (EDM) of HcHcr steel aims at reducing machining cost (i.e., maximize material removal rate (MRR) and minimize tool wear rate (TWR)) with good surface quality (i.e., minimize surface roughness (SR)). A comparative study was carried out on EDM of HcHcr D2 steel (DIN EN ISO 4957) by applying Taguchi L18 experimental design considering different electrode materials (copper, graphite, and brass), dielectric fluids (distilled water and kerosene), peak current, and pulse-on-time. The process performances were analyzed with respect to material removal rate, surface roughness, and tool wear rate. Pareto analysis of variance was employed to estimate the significance of the process variables and their optimal levels for achieving lower SR and TWR and higher MRR. Hybrid Taguchi-CRITIC-Utility and Taguchi-PCA-Utility methods were implemented to determine the optimal EDM parameters. Higher MRR of 0.0632 g/min and lower SR of 1.68 µm and TWR of 0.012 g/min was attained by graphite electrode in presence of distilled water as dielectric fluid compared to the brass and copper. Additionally, a metallographic analysis was carried out to study the surface integrity on the machined surfaces. Micrographic analysis of the optimal conditions showed lower surface roughness and fewer imperfections (lesser impression, waviness surface, and micro-cracks) compared to worst conditions.

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“…Step 5: The criterion information (Cj) is calculated by multiplicative formulae of Equations (13) and (14).…”

Section: Criteria Importance Through Criteria Inter-correlation (Critic)mentioning

confidence: 99%

Section: Principal Component Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Analysis and Optimization of EDM Parameters on HcHcr Steel in Context with Different Electrodes and Dielectric Fluids Using Hybrid Taguchi-Based PCA-Utility and CRITIC-Utility Approaches

Chandrashekarappa

Kumar

Pimenov

et al. 2021

Metals

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show abstract

“…With a small number of experiments, these techniques allow the effects of several parameters simultaneously on a response variable to be studied and also to quantify that influence. As can be observed in the latest research works recently published, the main models include factorial design experiments, the Taguchi method [26] and response surface methodology (RSM) [27], where the first ones are the most widespread techniques in these kinds of studies.…”

Section: Introductionmentioning

confidence: 99%

Analytical Modelling of Energy Density and Optimization of the EDM Machining Parameters of Inconel 600

Salcedo

Puertas

Pérez

2017

Metals

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Abstract:In this present research work, a new modelling of energy density in EDM (Electrical Discharge Machining) is proposed. Energy density can be defined as the amount of energy needed to get a unit volume of material removed, and for its modelling, the whole EDM process has been taken into account. This new definition lets us quantify the energy density that is being absorbed by the workpiece and the electrode. Results are compared to those obtained by die sinking EDM in an Inconel ® 600 alloy using Cu-C electrodes. Currently, this material is of great interest for industrial applications in the nuclear, aeronautical and chemical sectors, due to their combinations of good mechanical properties, corrosion resistance and extreme hardness at very high temperatures. The experimental results confirm that the use of negative polarity leads to a higher material removal rate, higher electrode wear and higher surface roughness. Moreover, the optimal condition to obtain a maximum MRR (Material Removal Rate) of 30.49 mm 3 /min was: 8 A, 100 µs and 0.6, respectively, for the current intensity, pulse time and duty cycle.

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“…Copper provides the best SF for closely followed by graphite; graphite was the best electrode material for dimensional accuracy and provides the least values of the errors. M. Priyadarshini et al (2015) conducted study [55] investigating the parametric optimization of EDM for machining Ti-6Al-4V alloy with copper electrode for desired responses using L25 OA Taguchi method, ANOVA and GRA. They found that for achieving higher MRR and greater SF, various combinations of optimal input controllable variables were needed.…”

Section: IIImentioning

confidence: 99%

Experimental Investigations into the Effect of Process Parameters on Performance Measures of Sink EDM Process: A Review Year 2011 To 2015 and Future Work

Choudri¹,

Gorabal²

2016

IJERT

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Sink Electrical Discharge Machining (Sink EDM) is a one of the important NTM process wherein electrically conductive work pieces are melted, vaporized (thermal erosion) by immersing in a dielectric fluid; tool electrode and work piece between the DC supply two poles either positive or negative and electric discharges takes place produces very high temperature in few micro seconds. It is widely used in defense, aerospace, automotive, micro systems, mould and die making industries. Recently researchers have discovered many ways to improve process parameters for achieving higher MRR, lower TWR and better surface quality. The paper reviews the works carried out from 2011 to till 2015. It reports on the research related to improve performance measures. The primary objective of analysis is to optimize the process parameters with the help of taguchi robust design methodology, design of experiment (DOE), analysis of variance(ANOVA), signal to noise ratio(S/N ratio, analysis of means (ANOM), face centered or rotational central composite design (CCD), scanning electron microscopy (SEM), X ray diffraction (XRD), response surface methodology (RSM), gray relational analysis (GRA), atomic force microscopy (AFM), energy dispersive spectroscopy (EDS), multiple regression analysis (MRA), mass spectrometry, optical microscopy techniques, fractional factorial design(FFD) with CCD and finite element analysis (FEM), etc. In end of the paper suggestions useful for future work has been indicated.

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Grey-taguchi Based Optimizationof EDM Process for Titanium Alloy

Cited by 26 publications

References 13 publications

Experimental Analysis and Optimization of EDM Parameters on HcHcr Steel in Context with Different Electrodes and Dielectric Fluids Using Hybrid Taguchi-Based PCA-Utility and CRITIC-Utility Approaches

Experimental Analysis and Optimization of EDM Parameters on HcHcr Steel in Context with Different Electrodes and Dielectric Fluids Using Hybrid Taguchi-Based PCA-Utility and CRITIC-Utility Approaches

Analytical Modelling of Energy Density and Optimization of the EDM Machining Parameters of Inconel 600

Experimental Investigations into the Effect of Process Parameters on Performance Measures of Sink EDM Process: A Review Year 2011 To 2015 and Future Work

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