naa a22 4500 510823416 CHVBK 20180411083544.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s12541-013-0243-3 doi (NATIONALLICENCE)springer-10.1007/s12541-013-0243-3 Study of workpiece vibration in powder-suspended dielectric fluid in micro-EDM processes [Elektronische Daten] [Gunawan Prihandana, Muslim Mahardika, Mohd Hamdi, Yoke Wong, Norihisa Miki, Kimiyuki Mitsui] In micro-EDM (electrical discharge machining), improper removal of debris causes short-circuiting between a tool electrode and a workpiece and in turn, prevents continuous machining process. Therefore, a remarkably longer period of time is required to fabricate a through hole than that would be required when no short-circuiting took place. In order to solve this problem, the dielectric fluid is immersed with graphite nano powders to reduce machining time and improve surface quality due to the less frequent of arcing between the tool electrode and the workpiece. However, excess powders become debris and subsequently deteriorate the efficiency of machining. To fully exploit the effects of the suspended powders, we introduced vibration of the workpiece in order to remove the debris in the small gap between the workpiece and electrode efficiently. The experimental results showed that combination of these techniques improved machining stability, assured continuous machining processes, and significant reduction of the machining time. Reduction of the machining time and the surface roughness of the workpiece after machining were investigated with respect to the powder concentrations when the workpiece was vibrated at 1000 Hz. Korean Society for Precision Engineering and Springer-Verlag Berlin Heidelberg, 2013 Micro-electric discharge machining nationallicence Powder suspension nationallicence Workpiece vibration nationallicence Machining time nationallicence Surface roughness nationallicence Prihandana Gunawan Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, 223-8522, Yokohama, Japan aut Mahardika Muslim Department of Mechanical and Industrial Engineering, Gadjah Mada University, 55281, Yogyakarta, Indonesia aut Hamdi Mohd Centre of Advanced Manufacturing & Material Processing (AMMP), Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia aut Wong Yoke Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore, Singapore, Singapore aut Miki Norihisa Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, 223-8522, Yokohama, Japan aut Mitsui Kimiyuki Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, 223-8522, Yokohama, Japan aut International Journal of Precision Engineering and Manufacturing Springer Berlin Heidelberg 14/10(2013-10-01), 1817-1822 2234-7593 14:10<1817 2013 14 12541 https://doi.org/10.1007/s12541-013-0243-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12541-013-0243-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Prihandana Gunawan Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, 223-8522, Yokohama, Japan aut NATIONALLICENCE 700 1- Mahardika Muslim Department of Mechanical and Industrial Engineering, Gadjah Mada University, 55281, Yogyakarta, Indonesia aut NATIONALLICENCE 700 1- Hamdi Mohd Centre of Advanced Manufacturing & Material Processing (AMMP), Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia aut NATIONALLICENCE 700 1- Wong Yoke Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore, Singapore, Singapore aut NATIONALLICENCE 700 1- Miki Norihisa Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, 223-8522, Yokohama, Japan aut NATIONALLICENCE 700 1- Mitsui Kimiyuki Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, 223-8522, Yokohama, Japan aut NATIONALLICENCE 773 0- International Journal of Precision Engineering and Manufacturing Springer Berlin Heidelberg 14/10(2013-10-01), 1817-1822 2234-7593 14:10<1817 2013 14 12541 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer