IJSRSET1622337 | Received : 23 April 2016 | Accepted : 27 April 2016 | March-April 2016 [(2)2: 1019-1022] © 2016 IJSRSET | Volume 2 | Issue 2 | Print ISSN : 2395-1990 | Online ISSN : 2394-4099 Themed Section: Engineering and Technology 1019 Optimization of Machining Parameters of Titanium Alloy Steel using : TOPSIS Method Jitendra Kumar * , Ganga Sagar Singh Department of Mechanical Engineering, Government Engineering College, Banda, Uttar Pradesh, India ABSTRACT The surface roughness varies with the change of machining parameter. In this paper presents an approach to the determination of the optimal cutting parameters with the help of MCDM method to create high surface finish in the face milling of Titanium alloy. In present study TOPSIS method used to optimize the process parameter in face milling of Titanium alloy steel (Ti-6Al-4V) with PVD coated Cemented carbide face mill inserts. Keywords: SDI TOOL,TOPSIS. I. INTRODUCTION Milling is the process for removing excess material from a work piece with a rotating cutting tool. Milling process is used for producing flat, contoured or helical surface, for cutting threads and toothed gears and for making helical grooves. Due to highly competitive global market, the organizations are now forced to focus more on increasing productivity while decreasing cost by right selection of machine tools. Proper selection of machine tool justifies labor saving, improved product quality and increased production rate with enhanced overall productivity. Vijay Manikrao Athawale [1] presents a paper on logical and systematic procedure to evaluate the computer numerical control (CNC) machines in terms of system specifications and cost by using TOPSIS method. Decision making plays a vital role especially in purchase department for reducing material costs, minimizing production time as well as improving the quality of product or service. A TOPSIS and VIKOR approaches to machine tool selection carried by jitendra kumar et al. [2] .gives an idea about proper machine tool selection. TOPSIS method is based on the concept that the chosen alternative should have the shortest Euclidean distance from the ideal solution, and the farthest from the negative ideal solution. Effect of Machining Parameters on Surface Roughness for Titanium Alloy is carried by ganga sagar singh et al. [3] . A study on Multi-attribute optimization of machining process parameters in powder mixed electro-discharge machining using TOPSIS and grey relational analysis is given by S. Tripathy , D.K. Tripathy [4] . Y.B Gaidhani, V.S.Kalamani [5] presented a paper which focus on selection of various process parameters like-angle of impact, abrasive material type, Stand-off distance, abrasive mass flow rate and target material properties for getting the required output like-depth of cut and cut quality. Zeki Ayag et al. [6] proposed a TOPSIS and alpha cut based fuzzy AHP to proper machine tool selection. One of the most popular techniques for complex decision-making problems is the analytic hierarchy process (AHP) developed by Saaty, which decomposes a decision making problem into a system of hierarchies of objectives, attributes (or criteria), and alternatives. II. METHODS AND MATERIAL Topsis Method TOPSIS method was firstly developed by Hwang and Yoon in 1981. The basic approach of this method is choosing an alternative that should have the shortest distance from the positive ideal solution and the farthest distance from negative ideal solution. The positive ideal solution maximizes the benefit criteria and minimizes conflicting criteria, whereas the negative ideal solution maximizes the conflicting criteria and minimizes the benefit criteria. For the calculation of TOPSIS values, we have to go through the following steps.