%K Electric discharges; Engineering research; Magnesium; Magnesium alloys; Process engineering; Surface roughness; Taguchi methods, AZ31 magnesium alloy; Biodegra-dable materials; Biodegradable implants; Conventional machining; Electrical discharge machining; Machining parameters; Non-traditional machining; Surface roughness (Ra), Electric discharge machining
%X Magnesium alloy is highly potential material for biodegradable implant application. Due to limitations in conventional machining methods, non-traditional machining method such as electrical discharge machining (EDM) die sinking process is proposed to produce intricate shape with tight tolerance on magnesium alloy. Nine EDM experiments with three levels and four parameters were conducted using Taguchi method on AZ31 magnesium alloy to explore the optimum machining parameters. It was found that pulse on-time was the most significant parameter affecting the surface roughness (Ra) of the machined surface. The optimum EDM condition obtained was 47 A peak current, 80 V voltage, 16 μs pulse on-time and 512 μs pulse off-time. A confirmation test was conducted and the result shows 95.5 similarity with the predicted Ra. However, the formation of cracks and craters were found on the machined surface area. It is proposed to solve this problem by applying powder mixed EDM method in future research work. © 2016 The Authors.
%O cited By 48; Conference of 4th International Conference on Process Engineering and Advanced Materials, ICPEAM 2016 ; Conference Date: 15 August 2016 Through 17 August 2016; Conference Code:131138
%J Procedia Engineering
%L scholars7384
%D 2016
%R 10.1016/j.proeng.2016.06.501
%T Electrical Discharge Machining on Biodegradable AZ31 Magnesium Alloy Using Taguchi Method
%A M.A. Razak
%A A.M. Abdul-Rani
%A T.V.V.L.N. Rao
%A S.R. Pedapati
%A S. Kamal
%I Elsevier Ltd
%V 148
%P 916-922