EXPERIMENTAL STUDY OF DRILLING GLASS FIBER REINFORCED EPOXY RESIN COMPOSITES (GFREC) USING TAGUCHI METHOD

Jasvir Singh; Ashwani Kumar

Volume : VII, Issue : II, February - 2018

EXPERIMENTAL STUDY OF DRILLING GLASS FIBER REINFORCED EPOXY RESIN COMPOSITES (GFREC) USING TAGUCHI METHOD

Jasvir Singh, Ashwani Kumar

Abstract :

Glass fiber reinforced epoxy resin composite (GFREC) materials have been widely used for manufacturing structural parts in aerospace and automotive industries because of their excellent mechanical and physical properties. They are also widely used as a substrate in electronics industry for producing printed circuit boards (PCB). Drilling of these composite materials is a complex process, with regard to the quality of drilled components. The principal drawbacks are related to delamination, surface roughness and ovality of the hole produced. In the present work, the objective is to study the effect of the process parameters namely cutting speed, feed rate, drill diameter and thickness of workpiece on quality characteristics in drilling of glass fiber reinforced epoxy resin composites (GFREC). The experiments were designed by using Taguch’s L₂₇ orthogonal array. Analysis of variance (ANOVA) was used to analyze the effect of all input process parameters on the output responses. The results indicate that feed rate is the most influential factor on the delamination, surface roughness and ovality. Plots of S/N ratio have been used to determine optimum set of input parameters for minimum delamination, surface roughness and ovality. < clear="all" style="page–eak–before:always;mso–eak–type:section–eak" />