Drilling of recycled carbon fibre–reinforced polymer (rCFRP) composites: analysis of burrs and microstructure

Abstract Since governments encourage sustainability, industries are making great efforts to reuse or recycle carbon fibre–reinforced polymer (CFRP) composites. Despite the promising early results concerning material properties of recycled CFRP, there is no published knowledge available about their machinability. In this study, drilling-induced micro and macro-sized geometrical defects were analysed compared in virgin CFRP. A total 180 drilling experiments carried out using uncoated solid carbide cutting tools. Six different CFRP composites tested at feeds. The burr characteristics microstructure by optical scanning electron microscopy. analysis variance (ANOVA) suggest that formation burrs reinforced chopped nonwoven mats less pronounced than Micro- both milled negligible. This study found relevant objection from point view damage.