Optimization of Material Removal Rate, Surface Roughness in Wire-EDM by using Desirability Function Analysis
A.V.S Ram Prasad1, Koona Ramji2, Arth Verma3, J Pavan Kumar4, S Kesava Rao5

1A.V.S Ram Prasad, Koneru Lakshmaiah Education Foundation, Guntur, India.

2Koona Ramji, Andhra University, Vishakhapatnam, India.

3Arth Verma, Koneru Lakshmaiah Education Foundation, Guntur, India.

4J Pavan Kumar, Koneru Lakshmaiah Education Foundation, Guntur, India.

5S Kesava Rao, Koneru Lakshmaiah Education Foundation, Guntur, India.

Manuscript received on 04 April 2019 | Revised Manuscript received on 11 April 2019 | Manuscript Published on 26 April 2019 | PP: 20-24 | Volume-8 Issue-6S April 2019 | Retrieval Number: F60140486S19/19©BEIESP

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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: In this paper, the behavior of a lead induced Ti-6Al-4V alloy has been studied using wire electrical discharge machine (WEDM). The machining process parameters such as peak current (A), pulse-on-time (B), spark gap voltage (C) and pulse-off-time (D) are to be optimized. Taguchi’s L27 Orthogonal Array (OA) has been chosen for design and conduction of experiments. Material removal rate (MRR) and surface roughness (SR) are the multiple performance measures which are to be measured. Zinc-coated brass wire is used as electrode wire material. Analysis of variance (ANOVA) technique has been utilized to understand the effects, contribution, and significance of machining process parameters. The experimental results observes that the performance measure were highly influenced by peak current with a contribution of 81.34 % to material removal rate and 58.79 % to surface roughness. The optimal parametric combination for MRR were A3B3C1D1 and A1B1C1D1 for SR. Optimum machining parameters will be identified by composite desirability grade which will be obtained from desirability function analysis (DFA).

Keywords: Lead Induced Ti-6Al-4V Alloy, WEDM, MRR, SR, Taguchi Technique, Desirability Function Analysis.
Scope of the Article: Mechanics and Materials Aspects of Advanced Construction Materials