Title: Multi-response optimisation of EDM parameters using data envelopment analysis

Authors: Jambeswar Sahu; Siba Sankar Mahapatra; Chinmaya P. Mohanty

Addresses: Department of Mechanical Engineering, National Institute of Technology, Rourkela 769008, India ' Department of Mechanical Engineering, National Institute of Technology, Rourkela 769008, India ' Department of Mechanical Engineering, National Institute of Technology, Rourkela 769008, India

Abstract: In this work, machinability studies of AISI D2 steel on a die-sinking electrical discharge machine (EDM) using brass tool has been reported. A response surface methodology (RSM) is adopted to establish effect of various process parameters on important responses. Data envelopment analysis (DEA) is adopted to obtain relative efficiency for each experimental run treating them as decision making units (DMUs). Considering the relative efficiency as an equivalent response, the effect of each processing parameter is analysed and the optimal setting is reported. With the best combination of parameter setting, a thermo-physical model is developed to validate the optimal setting.

Keywords: response surface methodology; RSM; data envelopment analysis; DEA; material removal rate; MRR; tool wear rate; TWR; decision making units; DMUs; relative efficiency; thermo-physical modelling; multi-response optimisation; EDM parameters; die-sinking EDM; electrical discharge machining; electro-discharge machining; brass tools.

DOI: 10.1504/IJPQM.2015.068472

International Journal of Productivity and Quality Management, 2015 Vol.15 No.3, pp.309 - 334

Available online: 17 Mar 2015 *

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