Experimental investigation and optimisation of process parameters in micro-electrical discharge machining

Jerald, Jason; Kumanan, S.; Kumar, S. P. Leo; Chandrakar, Himanshu

doi:10.1504/ijmtm.2013.058617

Cited by 10 publications

(4 citation statements)

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“…These electrons strike the workpiece at high velocity and produce more amount of heat at the IEG. Hence, work material is eroded from the top substrate due to melting and evaporation (Jerald, Kumanan, Kumar, & Chandrakar, 2013). It can also be inferred from the Figure 3 that the melting volume of tool negative is larger than the tool positive.…”

Section: Resultsmentioning

confidence: 88%

Tool speed and polarity effects in micro-EDM drilling of 316L stainless steel

Pilligrin

Asokan

Jerald

et al. 2017

Production & Manufacturing Research

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This paper focuses on the issues of Resistor-Capacitor-based Electrical Discharge Micro-Machining process and investigates the effects of tool speed and polarity on the performance measures such as Tool Wear Rate, Material Removal Rate, Overcut and Taper Angle by drilling on 316L Stainless Steel. Taguchi's L54 mixed orthogonal array design is employed to conduct experiments by varying tool polarity at two levels and voltage, capacitance, spindle speed at three levels. The cause and effect relationship between the experimental factors and responses are analysed and discussed using Factorial Analysis of Variance technique. Optimum combinations of machining parameters are also evaluated using Taguchi-based Grey Relational Analysis, by considering grey relational grade matrix and influence of process parameters on the responses. Further, microscopic analysis is done to identify the micro-voids, globular formation, and cracks present on the surface of the hole produced under various machining conditions.

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Section: Resultsmentioning

confidence: 88%

Tool speed and polarity effects in micro-EDM drilling of 316L stainless steel

Pilligrin

Asokan

Jerald

et al. 2017

Production & Manufacturing Research

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“…They observed that improvement in GRG is 0.0454 using GRA analysis. Jerald et al [21] used GRA to optimize the micro EDM parameters. They found that the material removal increases from 0.1067 to 0.1178 mm 3 min −1 while tool wear decreases from 0.06267 to 0.05386 mm 3 min −1 obtained by using GRA.…”

Section: Introductionmentioning

confidence: 99%

Multi-response optimization of duplex turning of Nickel alloy using grey relational analysis with entropy measurement

Kumar

Yadav

Kumar³

2019

Eng. Res. Express

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In this work, grey relational analysis (GRA) and entropy weight technique are used for optimizing the Duplex turning parameters of Nickel alloy for multi-performance measures. The Taguchi methodology and GRA are used for optimization of multi-responses like primary-cutting force (Fp), secondary-cutting force (Fs) and average surface roughness (Ra) positively. The factors like cutting speed, feed-rate, and primary depth-of-cut (DOC) and secondary-DOC are selected for experimentation. Analysis of variance technique is applied for investigating the factor effects on the responses. The optimal result shows improvement of 11.45%, 13.91% and 18.30% on responses F P , F S and Ra respectively.

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“…Different materials machined using µ-EDM. Inconel CuW, WC, Cu Deionised water, kerosene, DCO 1000i ® Reduction in pulse current reduces surface damage and cracks[124], control of spark gap essential for optimum machining[125], obtained an optimised MRR of 0.1178 mm 3 min −1[126]. Cracks on surface of the order 2-3 µm observed[127].• TiN/Si 3 N 2 WC -Successfuly machined microholes of dia 70 µm and depth 700 µm…”

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Microfeatures and microfabrication: current role of micro-electric discharge machining

Singh

Mali

2019

J. Micromech. Microeng.

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The field of microfeatures and microdevices is an emergent field, with applications extending from cooling of turbine blades to drug delivery in the human body. Fabrication of these features, microfabrication, is a challenge as it requires precise control over material removal in the micro domain. There are several techniques available for microfabrication, of which microelectric discharge machining (μ-EDM) has emerged as a leading technique for its versatility on different materials and ability to fabricate intricate parts and features. This paper presents compiled information on microfeatures, their applications, and different microfabrication techniques with emphasis on the current status and role of µ-EDM in microfabrication.

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Experimental investigation and optimisation of process parameters in micro-electrical discharge machining

Cited by 10 publications

References 0 publications

Tool speed and polarity effects in micro-EDM drilling of 316L stainless steel

Tool speed and polarity effects in micro-EDM drilling of 316L stainless steel

Multi-response optimization of duplex turning of Nickel alloy using grey relational analysis with entropy measurement

Microfeatures and microfabrication: current role of micro-electric discharge machining

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