MD SHAMIM SHAH
@pvpittssm.edu.in
ASSISTANT PROFESSOR AND MECHANICAL ENGINEERING
PVPIT, PUNE
RESEARCH INTERESTS
UNCONVENTIONAL MACHINING
Scopus Publications
Scopus Publications
Md Shamim Shah, Deepa Gupta, Probir Saha, Ashwani Assam, and Chiranjit Sarkar
Springer Science and Business Media LLC
Md Shamim Shah and Probir Saha
Elsevier BV
Md Shamim Shah and Probir Saha
Informa UK Limited
Abstract The performance characteristics of micro-EDM dressing were investigated based on some real-time and offline responses for the fabrication of micro-rod(s) on a novel Ti-6Al-7Nb biomedical material. These characteristics evaluated along the micro-rod length at three different discharge energy settings were analyzed by monitoring the discharge gap condition captured through an in house developed pulse-discriminating system (PD). The experimental results show that the normal pulse was more (∼90%) in the low energy setting (E 1). In contrast, arcing was more (∼28%) in the high energy setting (E 3). Pulse frequency was found more (∼60 ) in E 1. However, due to an increase in the ‘idle’ time, it significantly decreased (∼25 ) along the machining length. however, was found more (∼5.7 × 103, µm3/s) in E 3. The specific energy was found very high (∼9 MJ/mm3) in E 1 since the process spent additional energy to remove the re-solidified molten metal. The was, on the other hand, found very high (∼2.1) in E 1 due to prolonged exposure to discharges and experiencing higher total discharge energy by the work-tool interface. E 3 was found more suitable for fabricating dimensionally accurate micro-rod(s) on this material because of less tool wear.
M. S. Shah and P. Saha
Springer Singapore