A Review on Micro Drilling of Glass Fiber Reinforced Polymer Composites

Abstract

Drilling can be defined as a metal removal process in which holes of required size & depth from minimum to maximum can be obtained with the help of a rotary cutting tool called the drill bit. The requirement of micro holes in various applications such as filters in the medical field and circuit boards have resulted in the development of Micro Drilling operation as they reduce the production time and cost. In this paper, the literature survey on various challenges in the micro drilling of GFRP such as tool wear, drilling parameters (speed, depth of cut and feed), de-lamination, use of coated and uncoated tools, tool materials and their micro structural characterization has been performed. From the past few years, it can be concluded that there is a very small work that has been done in the area of micro drilling of GFRP. Today there is a need for the development of various advanced techniques to fulfill the need at a better cost and reduced time.

Support Vector Regression approach for prediction of delamination at entry and exit during drilling of GFRP Composites

“…Thakur et al [6] have optimized the drilling parameters using multi-objective optimization techniques during machining of CFRP Composites taking into consideration the delamination and material removal rate as the response parameters. Ramesh et al [7] investigated the hole quality during drilling of thick non laminated Glass Fiber Reinforced Plastic Composite rods utilizing coated tungsten carbide twisted drill bit.They measured the ovality of the hole using Coordinate Measuring Machine. Solati et al [8] investigated the surface quality and mechanical properties during CO2 laser drilling of Glass Fiber Reinforced Composite.…”