Investigation of Micro Electrical Discharge Drilling on Fabricated Zn/(Fe+Ag+Mg)-MMC for Cardiovascular Stent Application

Pankaj Mohan; Prashant Chechi; Saurabh Kumar Maurya; Alakesh Manna

doi:10.56042/jsir.v85i4.4173

Authors

Pankaj Mohan Department of Mechanical Engineering, Punjab Engineering College (Deemed to be University), Chandigarh 160 012, India
Prashant Chechi University Centre for Research and Development, Chandigarh University, Mohali 140 413, Punjab, India
Saurabh Kumar Maurya Department of Mechanical Engineering, Punjab Engineering College (Deemed to be University), Chandigarh 160 012, India
Alakesh Manna Department of Mechanical Engineering, Punjab Engineering College (Deemed to be University), Chandigarh 160 012, India

DOI:

https://doi.org/10.56042/jsir.v85i4.4173

Keywords:

Biodegradable stents, Hybrid metal matrix composite, Micro perforation, SEM analysis, Ultrasonic vibration-aided stir casting

Abstract

These days, zinc and its composites have attracted significant interest in the field of biomedical engineering due to their bio absorbability. Micro Electrical Discharge Drilling (µ-EDD) was used for making micro perforations in Zn/(Fe+Ag+Mg)-MMC for cardiovascular stent application. The influence of µ-EDD process parameters such as peak current, pulse-off time, pulse-on time, tool rotation, tool material, and electrode polarity were studied with respect To Material Removal Rate (MRR), Drill Overcut (DO), and Tool Wear Rate (TWR) during the micro-drilling of the MMC. Further, Taguchi and GRA based optimization were performed. From the experimental study it was found that MRR, DO and TWR increases with peak current, pulse-on-time and rotation of tool electrode. Optimization improved the MRR, DO and TWR by 111.52%, 20.83% and 76.79% respectively. Peak current and pulse-on-time was found significant for MRR DO and TWR whereas peak current and pulse-off-time was found significant for GRA based analysis. SEM examinations of the micro-drilled hole show that high circularity and a good surface finish was achieved.

Author Biographies

Pankaj Mohan, Department of Mechanical Engineering, Punjab Engineering College (Deemed to be University), Chandigarh 160 012, India

Pankaj Mohan is a research scholar in the Department of Mechanical Engineering, Punjab Engineering College (Deemed to be University) Chandigarh, under the supervision of Dr. Alakesh Manna. He is currenlty working in the area of fabrication of metal matrix composites for biomedical application and non-convetional machining on fabricated MMCs.
Saurabh Kumar Maurya, Department of Mechanical Engineering, Punjab Engineering College (Deemed to be University), Chandigarh 160 012, India

Saurabh Kumar Maurya is a research scholar in department of mechanical engineering, Punjab Engineering College (Deemed to be University), Chandigarh, India. He has completed his M. Tech from the same institute under the guidance of Dr. Alakesh Manna in the year of 2020. His research areas are fabrication of MMCs, nonconventional machining and micromachining.
Alakesh Manna, Department of Mechanical Engineering, Punjab Engineering College (Deemed to be University), Chandigarh 160 012, India

Alakesh Manna is a Professor from Mechanical Engineering Department, Punjab Engineering College (DU), India. He has 17½ years industrial experience as IOFS and 19 years teaching experience. His research areas are fabrication of MMCs, advanced micromachining and micro-manufacturing. He had published 266 research papers, 21 book chapters and five patents, guided 18 PhD, 34 MTech students, written two textbooks A Text Book of Reliability and Maintenance Engineering and A Text Book of Manufacturing Science and Technology-Part-I, recipient of best teacher awards, best paper award IE(India), WCE London-2016, Professor D.N. Trikha Research Publication Award-2010, and fellow member of IE(I) and SME.