Surface Roughness Prediction by Response Surface Methodology in Milling of Hybrid Aluminium Composites

In the present study, a Response Surface model (RSM) has been developed to predict the surface roughness during face milling of Hybrid composites. Experiments were carried out with tungsten carbide insert at various cutting speed, feed, and weight fraction of Alumina (Al2O3). Materials used for the present investigation are Al 6061-aluminum alloy reinforced with Al2O3 of size 45 microns and graphite (Gr) of an average size 60 microns, which are produced by stir casting route. Central composite face centered second order response surface methodology was employed to create a mathematical model and the adequacy of the model was verified using analysis of variance. Also a comparison has been done between the result obtained through response surface methodology and experimental values which indicates that the experimental values are very much close to the predicted values.