Interaction mechanisms and damage formation in laser cutting of CFRP laminates obtained by recycled carbon fibre

Abstract The increase in the use of composite materials poses problem their disposal/recycling after End Life (EOL). Different strategies were developed to recycle material, resulting availability new raw materials, characterised by overall good mechanical properties and significantly low cost. However, applicability these industrial production also depends on possibility producing processing them with likewise available technologies. Among technologies that can be adopted for recycled resin infusion under flexible tooling (RIFT) laser machining, respectively, stand out above all due high production/machining speed compared This paper investigates apply both carbon fibre–reinforced polymer laminates obtained adopting fibres. Recycled CFRP plates about 2.7 mm thickness produced RIFT tensile flexural tests. After characterisation, cutting tests performed using a 450 W QCW fibre laser, varying pulse power, length, overlap. kerf geometries HAZ extension measured at upper bottom parts as well section. Analysis variance was define which how process parameters affect dimension extension. Results showed it is possible cut up 2000 mm/s, obtaining, best conditions, narrow kerf, limited HAZ, taper angle 0°. Graphical abstract