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Optimization of machining parameters for EDM operations based on central composite design and desirability approach

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Abstract

A novel aluminium metal matrix composite reinforced with SiC particles were prepared by liquid metallurgy route. Recent developments in composites are not only focused on the improvement of mechanical properties, but also on machinability for difficult-to-machine shapes. Electrical discharge machining (EDM) was employed to machine MMC with copper electrode. using EDM. Experiments were conducted using pulse current, gap voltage, pulse on time and pulse off time as typical process parameters. The experiment plan adopts face centered central composite design of response surface methodology. Analysis of variance was applied to investigate the influence of process parameters and their interactions viz., pulse current, gap voltage, pulse on time and pulse off time on material removal rate (MRR), electrode wear ratio (EWR) and surface roughness (SR). The objective was to identify the significant process parameters that affect the output characteristics. Further a mathematical model has been formulated by applying response surface method in order to estimate the machining characteristics such as MRR, EWR and SR.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Adhiparasakthi Engineering College, Melmaruvathur, Tamilnadu, 603 319, India

    Subramanian Gopalakannan

  2. Department of Mechanical Engineering, Pondicherry Engineering College, Puducherry, 605 014, India

    Thiagarajan Senthilvelan

Authors
  1. Subramanian Gopalakannan
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  2. Thiagarajan Senthilvelan
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Correspondence to Subramanian Gopalakannan.

Additional information

Recommended by Associate Editor Sung Hoon Ahn

S. Gopalakannan is currently working as Associate Professor in the Department of Mechanical Engineering Adhiparasakthi Engineering College, Tamilnadu, India. He received his B.E Mechanical Engineering from University of Madras, M.E Production Engineering from Annamalai University and Ph.D. in Mechanical Engineering from Pondicherry University. He published 10 International Journals, 8 International Conferences and 1 National Conference. His research areas include characterization of nanocomposites, machining of newer materials, unconventional machining processes and optimization techniques.

T. Senthilvelan is working as Professor in the Department of Mechanical Engineering, Pondicherry Engineering College, Puducherry, India. He received his B.E Mechanical Engineering,, M.E Production Engineering and Ph.D. Manufacturing Engineering from Annamalai University in 1986, 1988 and 2003 respectively. He guided 5 Ph.D. scholars and currently guiding 9 scholars. He published 47 International Journals, 2 national Journals, 20 International Conferences and 18 National Conferences. His research interests include metal forming, powder metallurgy, fabrication and characterization of composites and nanocomposites, machining of newer materials and optimization techniques.

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Gopalakannan, S., Senthilvelan, T. Optimization of machining parameters for EDM operations based on central composite design and desirability approach. J Mech Sci Technol 28, 1045–1053 (2014). https://doi.org/10.1007/s12206-013-1180-x

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  • DOI: https://doi.org/10.1007/s12206-013-1180-x

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