Flexure Behaviors of ABS-Based Composites Containing Carbon and Kevlar Fibers by Material Extrusion 3D Printing

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.

Fused Deposition Modelling of Fibre Reinforced Polymer Composites: A Parametric Review

“…The tensile strength of the "flat" and "up-right" orientation in the article is approximately 52 MPa and 35 MPa, respectively. Wang et al [51] compared flexural properties of the "flat" and "on-edge" printing with ABS reinforced with different short fibre types; CF, GF, KF. The author claimed that the "on-edge" shows higher energy absorption than the "flat" referring to higher flexural strength and stiffness than the "flat" specimen by 19% and 24%, respectively [51].…”

“…Wang et al [51] compared flexural properties of the "flat" and "on-edge" printing with ABS reinforced with different short fibre types; CF, GF, KF. The author claimed that the "on-edge" shows higher energy absorption than the "flat" referring to higher flexural strength and stiffness than the "flat" specimen by 19% and 24%, respectively [51]. According to the printing of [0 • /90 • ] raster angle with "flat" and "on-edge" in Figure 7a,b, the rasters in "on-edge" printing act as short columns resisting the bending load rather than the long beam raster in the "flat".…”

3D Printing On-Water Sports Boards with Bio-Inspired Core Designs

“…However, structural complexity has rendered these composites challenging to manufacture.3D printing, or additive manufacturing (AM), refers to producing objects from a 3D model, mostly layer by layer. The main benefits of 3D printing could be listed as design freedom, waste diminution as well as the ability to fabricate complex structures with sufficient geometrical precision [12,13,[16][17][18][19][20]. Recently, studies have been conducted to take advantage of 3D printing in the field of sports.…”

Effect of Material on the Mechanical Properties of Additive Manufactured Thermoplastic Parts

“…This will be discussed further in the next section 3.3. VOLUME 31 (YEAR XXXI) 2020 11 Table 5 and 6 show a comparative analysis of the properties of the PLA and ABS which was performed in order to evaluate the impact of the methodology and the results obtained in the present work using relevant specialised literature [13]- [20]. It can be seen that the values found in the literature varied for the same material.…”