Paper Title
Effect of Water Content on Process Parameter Optimization for Enhanced Surface Finish of Kevlar Composite

Surface roughness of walls of drilled holes is a very important parameter. Poor surface finish results in loose assemblies and significantly reduced fatigue strength. The phenomenon is more common in drilling of Kevlar composite. In this work empirical research is conducted. For this samples of Kevlar composite were developed and L9 array of Taguchi design was used. Process parameters; feed rate, spindle speed and point angle were considered to optimize the surface finish of drilled hole on Kevlar composite. Analysis of variance (ANOVA) was also performed. Results suggests that water content and thus the humidity plays a significant role in affecting the optimization of surface finish of composites. Keyword - Surface Roughness, Kevlar Composite, Taguchi, Design of Experiments