Title: Evaluation of the characteristics of the microelectrical discharge machining process using response surface methodology based on the central composite design
Authors: Lin, Y. C.
Tsao, C. C.
Hsu, C. Y.
Hung, S. K.
Wen, D. C.
National Chiao Tung University
Keywords: Response surface method;Central composite design;Electrode wear;Material removal rate;Overcut;Microelectrical discharge machining
Issue Date: 1-Oct-2012
Abstract: Evaluation of the characteristics of a microelectrical discharge machining (Micro-EDM) process is challenging, because it involves complex, interrelated relationships so a proper modeling approach is necessary to clearly identify the crucial machining variables and their interrelationships in order to initiate more effective strategies to improve Micro-EDM qualities (electrode wear (EW), material removal rate (MRR) and overcut). This paper uses a response surface method (RSM) based on the central composite design (CCD) for Micro-EDM problems with four EDM variables (peak current, pulse on-time, pulse off-time and electrode rotation speed). Experimental results indicate that peak current is the EDM variable that most affects the Micro-EDM qualities for SK3 carbon tool steel while pulse off-time had a significant interaction with that. The results show that RSM based on the CCD could efficiently be applied for the modeling of Micro-EDM qualities (EW, MRR, and overcut), and it is an economical way to obtain the performance characteristics of Micro-EDM process parameters with the fewest experimental data.
URI: http://dx.doi.org/10.1007/s00170-011-3745-0
ISSN: 0268-3768
DOI: 10.1007/s00170-011-3745-0
Volume: 62
Issue: 9-12
Begin Page: 1013
End Page: 1023
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