INGENIEUR
contributing to MRR and EWR. However,
work-piece thickness has only minor effect
on circularity of holes formed. The diameter
of the electrode tool contributes the most
to the circularity of micro holes.
4. The performance of MRR increases when
thinner brass work-pieces are used.
Larger electrode diameter, higher nominal
capacitance and higher feed rate also
influence MRR performance.
5. The EWR value decreases when thinner
stainless steel work-pieces are used.
Larger electrode diameter, lower nominal
capacitance and higher feed rate also
influence EWR performance.
6. The circularity of micro holes show best
result when thicker brass work-pieces,
smaller electrode diameters, lower nominal
capacitance and lower feed rates are used.
For future work, more experimental
investigation will be conducted in the area of green
dielectric fluid, new material, process parameters
and fine shapes.
ACKNOWLEDGEMENT
This project received a Prototype Research Grant
Scheme (PRGS) from the Ministry of Higher
Education. This innovation, which won a Gold
medal in the International Invention & Innovation
Exhibition 2016 (ITEX’16) and Malaysia Technology
Expo 2016 (MTE2016), is a collaboration between
Prof. Dr Imtiaz Ahmed Choudhury, Prof. Dr Zahari
Taha, AP. Dr Yap Hwa Jen, Aznijar Ahmad Yazid,
Waon Keng Leong, Muhammad Basril and Nurizaz
Nadia.
Patent filing No: UI 2015701844 and UI
2015702178.
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