Mathematical Modeling of Surface Roughness during Drilling of Resin Hybrid GFRP Composites

Abstract

The preparation, characterization and machinability of resin hybrid GFRP composites are presented in this paper. It is made up of Glass fiber and the mixture of epoxy and polyester resin. It was prepared by the traditional layout technique with the usage of Glass fiber. The weight percentages of GFRP are 0, 20 and 40 having the composition of polyester and epoxy resins. The study of ASTM revealed the variation of break loads and shear strength for three different combinations of epoxy and polyester resins. The main disadvantage of this method is that it resulted in poor dimensional stability and surface roughness. Our main goal was to minimize the surface roughness. There are certain drilling parameters such as composite material, point angle, spindle speed and feed rate during drilling of resin hybrid GFRP which are to be focused to minimize the surface roughness. The experiments were conducted and the results were obtained using Taguchi’s L9 orthogonal array design. It was further analyzed using Signal-to-noise Ratio. Investigating the cutting characteristics of Resin hybrid GFRP proved to be mandatory. This was done by using the Analysis of variance (ANOVA). The Minitab 15 software was used to determine the correlation by linear Regression methods. The value obtained was subjected to a recheck to check the percentage error. The percentage error between the experimental and theoretical value was minimal.