Electro-discharge machining of alumina: investigation of material removal rate and surface roughness

Ali, Mohammad Yeakub and Moudood, M. A. and Maleque, Md. Abdul and Hazza Faizi Al Hazza, Muataz and Adesta, Erry Yulian Triblas (2017) Electro-discharge machining of alumina: investigation of material removal rate and surface roughness. Journal of Mechanical Engineering and Sciences (JMES), 11 (4). pp. 3015-3026. ISSN 2289-4659 E-ISSN 2231-8380

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Abstract

Alumina is a non-conductive ceramic material which can meet the high demand of industrial applications due to its excellent physical and chemical properties. However, machining of alumina is not possible by using the conventional machining methods due to its inherent brittleness. Recently, electro-discharge machining has been used for structuring alumina with assisting electrode to initiate the spark between the conductive tool electrode and the non-conductive work piece material. However, the effects of process parameters on material removal rate and surface roughness have not been investigated to formulate mathematical models. This study dealt with developing models for material removal rate and surface roughness correlating three process parameters which are peak current, pulse-on time and gap voltage using response surface methodology. The models were verified with 7% error between the results of empirical models and the experimental values.

Item Type:	Article (Journal)
Additional Information:	4751/67959
Uncontrolled Keywords:	Electro-discharge machining; non-conductive ceramic; assisting electrode; response surface methodology; material removal rate; surface roughness
Subjects:	T Technology > T Technology (General) T Technology > TN Mining engineering. Metallurgy T Technology > TS Manufactures
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Prof. Ir. Dr. Mohammad Yeakub Ali
Date Deposited:	27 Nov 2018 15:03
Last Modified:	27 Nov 2018 15:03
URI:	http://irep.iium.edu.my/id/eprint/67959

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