Multi-objective optimization of CFRP drilling parameters based on response surface method

Carbon fiber-reinforced polymer (CFRP) is extensively utilized in the aerospace sector owing to its superior mechanical characteristics. However, numerous faults are prone to develop during the hole processing, which adversely impacts the mechanical qualities and reliability of the connectors. In this paper, the relationship between process parameters and defects was established by thrust force, and the effects of processing parameters on the thrust force, delamination, and burr defects of CFRP drilling were studied. The experiment utilized response surface methods grounded in the Box-Behnken design. A mathematical model was created to elucidate the correlation between thrust force and processing parameters, and the effects of their interactions on thrust force were analyzed. The impact of process parameters on faults was analyzed based on the single-factor experiment. The correlation between thrust force and defect production was determined via a mathematical model, demonstrating the impact of thrust force on delamination and burr flaws.