热塑性基复合材料壳体激光原位增材制造方法OA

Carbon fiber composites are key materials for reducing weight and increasing efficiency in high-end equipment and instruments.Composite shells made from them are widely used in aerospace,including rocket shells,fuel storage tanks,and pressure vessels.However,the current composite shell is mainly manufactured using winding technology,which has problems such as secondary forming requirements,low production efficiency,and insufficient adaptability to complex surfaces.In order to solve the above problems,a new method of laser-heated in-situ additive manufacturing for thermoplastic matrix composite shells is proposed.By utilizing the in-situ curing characteristics of high-performance thermoplastic resin matrix composites and combining the advantages of laser rapid heating and melting of thermoplastic materials,a robot-assisted seven-axis laser-heated in-situ additive manufacturing platform is built.On this basis,the influence of process parameters such as laser power and placement speed on the interlayer shear strength of CF/PEEK specimens was studied,and the maximum interlayer shear strength was obtained to be 55 MPa.Furthermore,a spiral-path generation method based on geodesics and an interference-free path decomposition method for the composite shell were proposed,and the effectiveness of the generated paths was verified using simulation software.Finally,a CF/PEEK composite shell was successfully prepared using the optimal process parameters(laser power of 150 W,placement speed of 50 mm/s),providing a new approach for high-quality and efficient in-situ manufacturing of thermoplastic matrix composite shells.