Effect of build-up orientations and process parameters on the tensile strength of 3D printed short carbon fiber/PA-6 composites

被引:19
作者
Kubota, Masahiro [1 ]
Hayakawa, Kota [1 ]
Todoroki, Akira [1 ]
机构
[1] Tokyo Inst Technol, Dept Mech Engn, Tokyo 1528550, Japan
关键词
Tensile strength; tensile stiffness; 3D-printed composites; carbon fiber; PA-6; short fiber; ABS; PLA;
D O I
10.1080/09243046.2021.1930497
中图分类号
TB33 [复合材料];
学科分类号
摘要
3D printers using fused filament fabrication (FFF) with thermoplastic filaments have been employed for rapid prototyping applications. The present research focuses on 3D-printed short carbon fiber/PA-6 composites. Specimens with four types of build-up orientations (0 degrees, 90 degrees, +/- 45 degrees, and layup) were fabricated using two types of 3D printer: Mark Two, produced by Markforged, and X-Plus produced by Qidi Tech. Tensile tests were performed on these specimens. X-ray CT and SEM observations were conducted to investigate the defects and gaps between the print paths. The effect of the bed temperature and extrusion rate were experimentally investigated. For the +/- 45 degrees specimens fabricated using Mark Two, a large gap between the print paths was confirmed. An increase in the extrusion rate of 5% (1.05) and a minor increase in the nozzle temperature of 3.6% (from 275 degrees C to 285 degrees C) yielded a smaller gap between the print paths, 20 % higher tensile strength of the +/- 45 degrees specimen, 10 % higher tensile strength of the 0 degrees specimen, and 4% higher strength of the lay-up direction specimen with X-Plus. The bed temperature had a minor effect on tensile strength.
引用
收藏
页码:119 / 136
页数:18
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