Опубликована: Янв. 1, 2024
Язык: Английский
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Окт. 1, 2024
Язык: Английский
Процитировано
21
Additive manufacturing, Год журнала: 2024, Номер 85, С. 104142 - 104142
Опубликована: Апрель 1, 2024
Язык: Английский
Процитировано
17
Langmuir, Год журнала: 2024, Номер 40(17), С. 8751 - 8759
Опубликована: Апрель 22, 2024
This perspective article summarizes recent advancements in extrusion-based 3D printing of continuous fiber-reinforced polymers (CFRPs). It focuses on manufacturing techniques and computational design methodologies. While fused deposition modeling has been the primary method for thermoplastic CFRPs, innovations have enabled thermoset CFRPs using direct ink writing or similar techniques. These processes are also integrated with robotic arms to dramatically enhance capabilities. Additionally, there notable progress enhancing methodologies simultaneously optimize fiber distribution topology printed CFRPs. The discusses future directions aimed at improving mechanical properties, scalability, multifunctionality, predictability CFRP printing, which offer valuable perspectives development this transformative approach.
Язык: Английский
Процитировано
11
Materials Horizons, Год журнала: 2024, Номер 11(18), С. 4378 - 4392
Опубликована: Янв. 1, 2024
Extrusion-based 3D printing methods with in-nozzle impregnation mechanisms have been extensively employed in the fabrication of continuous fiber composites. This study presents an innovative embedded technique that addresses significant challenges associated existing methods. The utilizes a deposition nozzle to precisely write fibers below resin. A laser beam is directed onto resin surface, which simultaneously cures around bundle. method demonstrates its advantages producing high-quality composite samples well-aligned fibers, minimized void density, and outstanding mechanical properties. More importantly, it introduces several capabilities are highly desirable contemporary composites, but unattainable methods, including dynamic control volume fractions ability change matrix materials during printing. Furthermore, enables filaments along curved pathways overhanging for hollow features without support materials. developed exhibits versatility working different commercially available feedstock resins reinforcement fibers. It anticipated be impactful approach future development thermosetting composites diverse structural or multifunctional applications.
Язык: Английский
Процитировано
10
Composites Part A Applied Science and Manufacturing, Год журнала: 2025, Номер unknown, С. 108900 - 108900
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
2
Composites Part B Engineering, Год журнала: 2024, Номер unknown, С. 112001 - 112001
Опубликована: Ноя. 1, 2024
Язык: Английский
Процитировано
6
Advanced Materials Technologies, Год журнала: 2024, Номер unknown
Опубликована: Авг. 3, 2024
Abstract 3D printing offers a cost‐effective solution for rapidly prototyping and customizing composite products. The integration of multi‐axis robotic systems with the process significantly enhances motion control, design flexibility, manufacturing scalability. In this study, robot‐assisted platform associated digital workflow UV‐curable continuous fiber‐reinforced polymer composites (CFRPCs) is introduced. Specifically, transferable protocol established CFRPCs, which involves coordinate calculation, trajectory generation, validation checks. This enables samples or large‐scale structures on both planar substrates curved substrates. Additionally, unknown profiles using laser‐based scanning demonstrated. Overall, developed method are applicable to broader range feedstock materials manipulators, makes study valuable resource future developments in 3D‐printed CFRPCs.
Язык: Английский
Процитировано
5
International Journal of Solids and Structures, Год журнала: 2025, Номер unknown, С. 113248 - 113248
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
Polymer Engineering and Science, Год журнала: 2025, Номер unknown
Опубликована: Янв. 29, 2025
Abstract This work investigated the effect of toughening agents on hygrothermal aging resistance ultraviolet (UV) cationic‐cured epoxy resin 3,4‐epoxycyclohexymethyl‐3′,4′‐epoxycyclohexyl carboxylate (CE). After being toughened by polycaprolactone diol (PCL), resulting sample (PCL‐CE) exhibited excellent toughness but poor resistance, with a tensile strength 39.8 MPa and elongation at break 16.9%. poly(tetramethylene ether glycol) (PTMG), (PTMG‐CE) showed good limited toughness, 33.9 8.2%. Another (COFA‐CE) was prepared introducing hydrophobic castor oil fatty acid (COFA) into CE, which combined high PCL‐CE PTMG‐CE, reaching 47.8 12.9%. 72 h 50°C 100% RH, COFA‐CE retained 46.9% 88.8% its original storage modulus, respectively. These were higher than values (16.6% 49.9%) PTMG‐CE (44.5% 77.7%). Finally, study revealed that performance samples degraded due to plasticization caused moisture absorption, properties could be recovered after drying. Highlights Castor employed modify UV‐cured The pre‐reaction between COFA CE increased their compatibility. Epoxy resistance.
Язык: Английский
Процитировано
0
Advanced Materials Technologies, Год журнала: 2025, Номер unknown
Опубликована: Фев. 16, 2025
Abstract The recently developed embedded printing technique enables composite fabrication by directing a laser beam onto the resin surface to cure it around continuous fiber bundles. This method allows for production of composites with well‐aligned fibers, and minimal voids, offers ability dynamically adjust matrix materials control volume fractions during printing. While previous studies have focused on proof‐of‐concept demonstrations, this study investigates mechanical properties printable curvatures along nonlinear pathways, both which are essential advancing 3D technologies fiber‐reinforced polymers (CFRPs). Uniaxial tensile tests conducted assess modulus, strength, failure mechanisms, different achieved varying thicknesses filament spacing. To evaluate printability, circular filaments printed at various speeds determine maximum curvature as function fraction. results enable fibers intricate patterns featuring optimized pathways. Overall, deepens understanding process valuable insights further optimizing parameters material selection. These findings can guide its future developments broader applications in aerospace, automotive, construction, etc.
Язык: Английский
Процитировано
0