Influence of Process Parameters on Abrasive Water Jet Machined Pockets on Inconel 718 Alloy

The proposed work area is ‘Abrasive Water Jet Machining (AWJM)’ due its various advantages over the conventional machining. AWJM is a non-traditional machining process in which material is removed by the erosion process where a very high pressure and very high velocity jet of abrasive particles and water slurry strikes on the work piece material (Momber and Kovacevic in Principles of abrasive water jet machining. Springer, [1]). Milling blind pockets is majorly used in the areas of automobiles, aerospace, and defense sectors. Here, for these applications, Inconel 718 is commonly used material which is very difficult to be machined by using conventional machining processes [2]. In many sectors like Aerospace, preference is given to high strength with less weight of the materials. The research work includes the use of ‘Taguchi method’ of Design of Experiments. It also includes finding the influence of particular process parameters on each selected output parameter, analysis of variance (ANOVA), and regression analysis for each output parameter. For this purpose, traverse speed and water pressure have been selected as process parameters, and pocket size, pocket depth, and surface roughness have been selected as output parameters.