Investigations of Milling Parameters on Hemp Fiber Reinforced Composite Using ANOVA and Regression

Abstract

The machinability of fiber reinforced composites is emphatically affected not only by the kind of fiber used in the composite but also by its properties. Milling composite materials is a very usual and plays a vital role for the assembly of composite structures. However, milling of composites is a somewhat complicated errand inferable from the heterogeneity of the material and a plenty of different issues, for instance, delamination factor, which show up amid the machining process and are connected with the qualities of the material and the cutting parameters. Present study looks into the influence of spindle speed, feed rate and depth of cut on thrust force, torque and delamination factor in hemp fiber reinforced polyester composites. The composite specimens were formulated using hand lay-up method. The analysis for attaining the optimality condition is performed using ANOVA and regression model. It was observed that the grouping of the inferior value of feed (0.1 mm/rev), lower spindle speed (1500 rpm) as well as the lower depth of cut (1.5 mm) results in minimum delamination factor and torque. The feed was found to be more significant than the depth of cut for thrust force.