Progress in 3D Printing of Continuous Fiber Reinforced Composites Based on Fused Deposition Modeling

The fused deposition molding (FDM) process is a 3D printing molding process that has received extensive attention and research because of its free molding, strong designability and rapid prototyping. This further expands the application of continuous fiber reinforced composites. This paper reviews the forming principle, process method, equipment and printing materials of the FDM process for continuous fiber reinforced composites. The effects of process parameters, impregnation state and path planning algorithm on the mechanical properties and surface quality of 3D printed continuous fiber reinforced composite samples are analyzed. The problems encountered in the current FDM process and technology development are summarized, and suggestions for the key directions of future development are proposed.