Study on Burr Formation and Tool Wear in Drilling CFRP and Its Hybrid Composites

As contemporary emerging materials, fiber-reinforced plastics/polymers (FRP) are widely used in aerospace automotive industries and other fields due to their high strength-to-weight ratio, stiffness-to-weight corrosion resistance, low thermal expansion properties. Drilling is the most frequently process industrial operation for polymer composite laminates, owing need joining structures. However, it a great challenge operators drill holes FRP non-homogenous anisotropic properties of fibers. Various damages, such as delamination, hole shrinkage, burr tool wear, occur heterogeneous nature laminates. Therefore, this study, carbon fiber reinforced (CFRP)/aramid (AFRP) hybrid composites (C-AFRP) were successfully synthesized, drilling characteristics, including generation also mainly investigated. The characteristics CFRP C-AFRP compared analyzed first time under same operating conditions (cutting tool, spindle speed, feed rate). experimental results demonstrated that had higher tensile strength good (low thrust less wear) with CFRP. lightweight high-strength structural material, have potential applications automobile after slight processing burrs generated during drilling.