Optimization of Hole Taper in Machining of SS316L Alloy Sheet Using Laser Beam Drilling
SS316L is a most popular super alloy engineering metal having wide applications in medical implants and aerospace fasteners. Mostly, this alloy has been used in aerospace and medical industries. In laser beam machining (LBM) is used thermal energy for machining process. There is very difficult to machining operation like drilling, cutting etc. on this alloy through laser beam. In present research work, laser drilling has been used to create a precise hole of 2mm diameter on SS316L sheet. Aim of this work is to optimize (minimize) taperness of a drilled hole. Experimental models have been prepared in central composite design with 31 experiments. Response surface methodology (RSM) has been used to validate experimental model. Optimization technique genetic algorithm (GA) has been used to minimize hole taper (HT). Significance of input parameters also discussed for hole taper. Hole taper is reduced (improved) by 16.1% from experimental value while using GA.