Effect of continuous fiber orientations on quasi‐static indentation properties in 3D printed hybrid continuous carbon/Kevlar fiber reinforced composites

Abstract

The mechanical properties of hybrid continuous carbon and Kevlar fibers reinforced polyamide (PA)-based composites manufactured by the fused deposition modeling (FDM) technique were investigated in this paper. The effects of fiber raster orientations, fiber layer locations, and stacking sequences were studied by the quasi-static indentation (QSI) tests. The multi-scale morphological investigation was applied to analyze the deformation and failure mechanisms of the printed hybrid composites.The results showed that the printed hybrid composites with 0 /90 /0 /90 fiber raster orientations and the middle fiber layer locations presented the highest energy absorption as high as 5107.0 N mm in the current study. In contrast, the printed hybrid composites with 0 /45 /90 /135 fiber raster orientations and the bottom fiber layer locations performed the lowest energy absorption of 3659.5 N mm. 0 continuous fiber layers with effective long raster lengths could effectively improve the crack resistance of specimens. The introduction of 90 continuous layers into laminates significantly increased the energy absorption capability of specimens due to the extensive damage of continuous fiber-reinforced layers (CFRLs). CFRLs with the middle location helpfully delayed the initiation and propagation of cracks. In addition, when CFRLs were located at the top and bottom, the specimens with Kevlar fiber layers above carbon fiber layers showed much higher maximum force than that of specimens with Kevlar fiber layers below carbon fiber layers.

G-code generation for deposition of continuous glass fibers on curved surfaces using material extrusion-based 3D printing

“…Results showcased the considerable advantages of the proposed pattern in generating adaptive filler patterns with intricate geometries. Further contributions to the field include Zhang et al's [10] introduction of a novel fabrication method for 3D printing curved shell fiber-reinforced composite sheets, Li et al's [11] presentation of a unique approach for 3D printing continuous carbon fiber-reinforced composites, and Zhu et al's [12] investigation into the effect of continuous fiber orientations on the quasi-static fracture properties (hardness) of 3D printed hybrid fiber-reinforced composites with carbon/Kevlar continuous fibers. Yan et al [13] achieved successful 3D printing of a strain sensor based on an acoustically reinforced fiber structure, while Zia et al [14] explored the mechanical behaviors and energy absorption of 3D printed poly lactic acid composites reinforced with continuous carbon/Kevlar fibers.…”

Path Planning and Bending Behaviors of 3D Printed Continuous Carbon Fiber Reinforced Polymer Honeycomb Structures

“…In addition, the printing path also had a crucial influence on the arrangement and orientation of continuous fibers and further affects the mechanical properties of the structure [37][38][39]. Some researchers have tried to improve the manufacturing process and mechanical properties of CFRPHSs by printing path planning [40,41].…”

A multiscale study of heat treatment effects on the interlayer mechanical properties of 3D printed continuous carbon fiber‐reinforced composites

“…17 Meanwhile, the mechanical properties of 3D printed continuous fiber-filled composites highly depended on printing parameters. [18][19][20] Zhu et al 21 discovered that appropriate fiber angle and stacking sequence can delay the initiation and propagation of cracks, resulting in improving the bearing capacity of the composites. Therefore, the macro-mechanical properties of the printed continuous fiber-reinforced composites would not only depend on the properties of materials (with or without continuous fiber reinforcement) but also on the interactions between printed filaments and layers induced by printing parameters.…”