Optimization of Process Parameters on Thrust Force and Delamination Factor in Drilling of Carbon Fiber Reinforced Composites

The major objective of this work was to investigate a statistical model, based on Taguchi technique and to estimate the quality of drill in CFRP composite material prepared by hand layup technique. The design of experiments were made to investigate the influence of drill parameters such as cutting speed, feed rate and drill diameter on thrust force and delamination factor in drilling of CFRP laminates. Analysis of variance (ANOVA) was used to analyze the significance level of every drill parameters. The statistical model yields the results showing that the speed and feed rate were the major parameters affecting significantly the drilling process. Delamination due to drilling was analyzed by the stereomicroscope.