TY - JOUR ID - 16067 TI - Optimization of WEDM Process Parameters on Surface Roughness and Study of Physical behaviour using SEM for Machining Aluminium Alloy Al 7075 using Brass Coated Copper Wire JO - Advanced Materials Proceedings JA - AMP LA - en SN - 2002-4428 AU - Jayachandran, Shanthi AU - Raman, Mohan AU - Ponnusamy, Palanisamy AD - Renovation & Modernisation Division, Mettur Thermal Power Station-I, Metturdam AD - Department of Mechanical Engineering, Sona College of Technology, Salem AD - Department of Mechanical Engineering, Saveetha Engineering College Chennai Y1 - 2019 PY - 2019 VL - 4 IS - 4 SP - 165 EP - 168 KW - WEDM KW - optimisation KW - Surface Roughness KW - RSM KW - GA KW - Al 7075 KW - SEM KW - brass coated wire DO - 10.5185/amp.2019.0024 N2 - Wire Electrical Discharge Machining is one of the most effective Non-Conventional Machining method available to machine intricate shapes which are very difficult to machine with conventional machining methods, on electrically conductive materials havingvarying hardness. In this research work, an attempt hasbeen made to study the effect of process parameters of WEDM on the Surface roughness. Input process parameters considered in this work are Pulse on time (TON), Pulse off time(TOFF), Wire Feed (WF), Wire Tension(WT) and theSurface Roughness as response. Al 7075 Aluminium alloywas taken as work material and Brass coated copper wire as electrode to machine and the values of roughness obtained by varying the input process parameters were analysed using Taguchi method (L 27 orthogonal array). The measured values have been used to develop the mathematical modeland the accuracy of the model wastested using Analysis of Variance (ANOVA) technique. Based on the predicted values the interaction graphs, were drawn betweentheSurface roughnessandthe processparameterstaken for this study. It was construedthatthepulse-on time has the highest impact on the Surface roughness followed by the Wire feed, Wire tension and the Pulse-off time. The surface roughnessgot increasedwith increase in wire feed. Finally optimum parameters have been arrived to achieve better surface roughness. WEDMed surface was also examined by using scanning electron microscope (SEM) and evinced that the physical behaviour of these process parameters on Surface roughness.Copyright © VBRI Press. UR - https://amp.iaamonline.org/article_16067.html L1 - https://amp.iaamonline.org/article_16067_da3100688d13d33e3104c0dd8d259aef.pdf ER -