▎ 摘　　要

Carbon fiber-reinforced polymer (CFRP) composite materials are massively used since the last decades in many contemporary applications, especially in aerospace for their strength to density and stiffness to density ratios which are higher than alloys. On the other hand, CFRP are known to be difficult to machine compared to metals due to their heterogeneous and anisotropic structure. Common damages like delamination, fiber loosening and pull out, uncut fibers, and mechanical and thermal damages to the epoxy matrix are observed after machining. This research studies the effect of graphene particles addition in epoxy matrix of CFRP on the cutting temperature, in a global objective of improving the machinability and cutting tool life. Thereby, four modified resin plates (0%wt, 0.25%wt, 3%wt, and 10%wt of graphene) without carbon fibers (nanocomposite plates only) were first molded. Next, three CFRP laminates with different percentages of graphene (0%wt, 0.25%wt, and 3%wt) were manufactured using a combination of vacuum bagging and hydraulic pressing in order to guarantee a good fillers' distribution within the composite plates and a consistent fiber volume fraction. The trimming experiments were performed using a polycrystalline diamond (PCD) tool which was selected for its well-known machining performance. As expected, the tool wear was nonexistent on nanocomposites. For CFRP plates, the tool wear remained in its break-in zone throughout the experiment (final Vb approximate to 0.051 << 0.3mm for a final length cut of 4.5 m). The cutting tool's temperature increases with graphene concentration for both nanocomposites and CFRP samples. However, the temperature increase of CFRP plates was reduced by 30% with a graphene concentration of 3%wt. The feed forces were also greatly reduced (up to 43%) with graphene when machining CFRP.