Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts Joined with Metallic Pins

Abstract Continuous Fiber Reinforced Thermoplastic (CFRT) hybrid parts offer interesting possibilities for lightweight application, which can exceed the capabilities of mono material metal or CFRT parts. In this case, joining technology oftentimes is limiting factor. This study investigates a operation with pin structures are additively manufactured via powder bed fusion featuring different diameters and tip geometries, inserted into locally infrared heated part. The resulting fiber rearrangement assessed using transmitted light microscopy, confocal laser scanning microscopy as well micro-computer-tomography. It could be shown that all variants similar distinct displacement seen diameter has significant effect on orientation smaller being advantageous because gentle reduced undulation. geometry only minor orientation. Especially in X/Y plane no systematic influence observed. Based gained insights three-stage model processes proposed.