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An Experimental Investigation of Machinability of Inconel 718 in Electrical Discharge Machining

(BQ)This paper proposes an experimental investigation and optimization of the various machining parameters for the electrical discharge machining (EDM) processes on Inconel 718 super alloy using a multi objective particle swarm optimization (MOPSO) algorithm. | Available online at www.sciencedirect.com ScienceDirect Procedia Materials Science 6 (2014) 605 – 611 3rd International Conference on Materials Processing and Characterisation (ICMPC 2014) An Experimental Investigation of Machinability of Inconel 718 in Electrical Discharge Machining Chinmaya P Mohanty*, Siba Shankar Mahapatra, Manas Ranjan Singh Departement of mechanical Engineering, National Institute of Technology,Rourkela,Odisha,India,769008 Abstract This paper proposes an experimental investigation and optimization of the various machining parameters for the electrical discharge machining (EDM) processes on Inconel 718 super alloy using a multi objective particle swarm optimization (MOPSO) algorithm. A Box-Behnkin design of response surface methodology has been used to collect data for the study. The machining performances of the process are evaluated in terms of material removal rate (MRR) and surface quality which are functions of process variables such as open circuit voltage, discharge current, pulse-on-time, duty factor, flushing pressure and tool material. Mathematical model is developed relating responses with process variables. Finally, a MOPSO algorithm has been proposed for the multi objective optimization of the responses. © 2014 The Authors. Published by Elsevier Ltd. © 2014 Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/). the Gokaraju Rangaraju Institute of Engineering and Technology (GRIET). Selection and peer-review under responsibility of Selection and peer review under responsibility of the Gokaraju Rangaraju Institute of Engineering and Technology (GRIET) Keywords: Electrical Discharge Machining;Inconel 718;Response Surface Methodology;Multi Objective Particle SwarmOptimization ; 1. Introduction The non-conventional machining processes are more capable than conventional machining process owing to ease of machining of hard materials with complex shapes in the .