Abstract
Titanium foams are most widely used in aircraft filters and in biomedical application as an implant material. Electro discharge machining (EDM) is an electrothermal non-traditional machining process used to generate intricate profiles on difficult to machine material including Titanium alloys. In this paper an attempt has been made to study the influence of EDM process parameters such as pulse ON time, peak current and gap voltage on discharge energy and hole dimensions which are taken as output parameter. Among these input parameters, peak current is having dominant effect on discharge energy. The effect of discharge energy on hole dimension viz. overcut and depth of hole is also analysed. Increasing the discharge energy overcut is mostly maintained between 0.035 and 0.104 mm. A mathematical model is proposed using regression analysis to identify the significant parameter that affects discharge energy and effective machining time. The proposed model predicts discharge energy and effective machining time with an error of 12.73% and 14.98% respectively.
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