Abstract :

Generating High-precision Micro-scale Features, Especially In Materials That Are Otherwise Difficult To Machine. In The Present Work, An Experimental Study Has Been Conducted To Examine The Drilling Performance Of Aluminium Composites Using Silver-coated Brass Tubular Electrodes Under Both Single-channel (SC) And Multi-channel (MC) Configurations. The Experiments Were Structured Based On A Taguchi L9 Orthogonal Array, Considering Pulse On Time (TON), Pulse Off Time (TOFF), And Discharge Current (DC) As The Key Input Parameters. The Machining Performance Was Evaluated In Terms Of Material Removal Rate (MRR) And Overcut (OC). Analysis Of The S/N Ratios Indicates That, For MRR, The Silver SC Configuration Achieved The Highest Value Of 2.451 DB At Run 3 (TON = 20 μs, TOFF = 50 μs, DC = 6 A), While The Silver MC Configuration Reached A Close Value Of 2.424 DB At Run 6 (TON = 50 μs, TOFF = 50 μs, DC = 2 A). In The Case Of Overcut, The Maximum S/N Ratio For Silver SC Was 0.1288 At Run 2, Whereas Silver MC Showed A Higher Value Of 0.1671 At Run 8. Among All The Input Variables, Discharge Current Was Found To Have The Most Significant Influence On The Performance Characteristics. Overall, This Study Helps In Identifying Suitable Machining Conditions And Electrode Configurations To Achieve Improved Efficiency And Accuracy In Micro-EDM Drilling Of Aluminium Composites.

Published:

20-4-2026

Issue:

Vol. 26 No. 4 (2026)

Page Nos:

2702 - 2706

Section:

Articles

License:

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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