Parametric Analysis of Cutting Parameters for Laser Beam Machining Based on Box-behnken Design

摘要

Laser beam machining (LBM) is one of the advanced machining processes which are used for shaping almost whole range of engineering materials. In LBM, surface roughness is one of important response which affects the quality characteristics of product. In this research work, the effect of process parameters such as cutting speed, frequency and duty cycle on surface roughness (Ra) for mild steel material in laser cutting is discussed. L-27 orthogonal array was selected for full factorial design to better understanding of interaction between process parameters. The values of surface roughness for mild steel were calculated using model equations and Box-Behnken design of Response Surface Methodology (RSM) is used to parametric analysis.