Abstract: In this paper, a CFRP propeller with a split metal embedded blade structure embedded in an FBG sensor is designed. The structure is a composite of metal embedded parts and carbon fiber materials, compared with pure composite propeller blades and blades. The root strength is higher and the placement of the blade carbon fiber prepreg is facilitated during the forming process. Using ANSYS ICEM software and 3D printing technology, 11 different three-layer solid model of the blade thickness were obtained, and the paving template of different carbon fiber layers was obtained, and the shape and size were closer to the theoretical design. The preparation of the pre-embedded FBG sensor is completed by the molding process, and the cause of the damage of the pre-embedded FBG sensor is analyzed. It can be known that the composite structural member is prepared by the molding process, and the fiber is required to be taken out and protected by the slotting method. Where the fiber may be bent or subjected to large shear forces, increasing its chamfer or fillet would prevent fiber damage.

Key words: split metal embedded parts, pre-embedded FBG sensor, CFRP propeller, compression molding