| Autor: |
Ichihara, Naruki, Ueda, Masahito, Kajiwara, Kentaro, Le Duigou, Antoine, Castro, Mickael |
| Předmět: |
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| Zdroj: |
Advanced Composite Materials; Jun2024, Vol. 33 Issue 3, p377-387, 11p |
| Abstrakt: |
The 3D printing of continuous carbon fiber–reinforced thermoplastics (c-CFRTP) results in fiber waviness and voids that limit mechanical performance. The effects of tensioning and compaction forces during 3D printing were experimentally studied to suppress fiber waviness. A tensioning force was generated along the filament to straighten the fibers by asynchronously controlling the filament feeding and print speeds. A compaction force was applied through the nozzle tip by setting the layer height to reduce the voids. Microscopic images of specimen cross-sections and surfaces indicated a reduction in fiber waviness and voids after these treatments, and three-point bending tests demonstrated improved mechanical properties. This combination of tensioning and compaction forces achieved 28% and 45% higher bending stiffness and strength, respectively. Tensioning and compaction forces are important printing parameters for the 3D printing of high-performance c-CFRTP. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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