Abstract
Short-fiber-reinforced thermoplastics are popular for improving the mechanical properties exhibited by pristine thermoplastic materials. Due to the inherent conflict between strength and ductility, there are only a few successful cases of simultaneous enhancement of these two properties in polymer composite components. The objective of this work was to explore the feasibility of simultaneous enhancement of strength and ductility in ABS-based composites with short-carbon and Kevlar fiber reinforcement by material extrusion 3D printing (ME3DP). Microstructure characterization and measurement of thermal and mechanical properties were conducted to evaluate the fiber-reinforced ABS. The influence of printing raster orientation and build direction on the mechanical properties of material extrusion of 3D-printed composites was analyzed. Experimental results demonstrated that the reinforcement of the ABS-based composites by short-carbon and Kevlar fibers under optimized 3D-printing conditions led to balanced flexural strength and ductility. The ABS-based composites with a raster orientation of ±45° and side build direction presented the highest flexural behaviors among the samples in the current study. The main reason was attributed to the printed contour layers and the irregular zigzag paths, which could delay the initiation and propagation of microcracks.
Highlights
The additive manufacturing (AM) technique is one of the most versatile and revolutionary methods for creating three-dimensional (3D) objects with complex structural components and diverse properties [1,2]
Short fibers, including carbon fibers (CFs), Kevlar fibers (KFs), and glass fibers (GFs), are typical reinforcements used to improve the mechanical behavior of thermoplastic-based composites using material extrusion 3D printing
Ferreira et al [19] studied the mechanical behavior of polylactic acid (PLA) and PLA-based laminated materials reinforced with short CFs produced by material extrusion 3D printing
Summary
The additive manufacturing (AM) technique is one of the most versatile and revolutionary methods for creating three-dimensional (3D) objects with complex structural components and diverse properties [1,2]. Material extrusion 3D printing based on fused deposition modeling (FDM) technology is of particular interest due to its affordability, minimal material wastes, environmental friendliness, and low learning curve [10,11]. Ning et al [18] evaluated the effect of CF weight ratios on the tensile strength and ductility of ABS composites fabricated by material extrusion 3D printing They concluded that the tensile strength and Young’s modulus of the composites increased with increasing content of the CFs. The short-CF-reinforced ABS samples could support an increased load during the bending process. Ferreira et al [19] studied the mechanical behavior of PLA and PLA-based laminated materials reinforced with short CFs produced by material extrusion 3D printing
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
