Tensile property evaluations of 3D printed continuous carbon fiber reinforced thermoplastic composites

Todoroki, Akira; Oasada, Tastuki; Mizutani, Yoshihiro; Suzuki, Yoshiro; Ueda, Masahiro; Matsuzaki, Ryosuke; Hirano, Yoshiyasu

doi:10.1080/09243046.2019.1650323

Cited by 78 publications

(48 citation statements)

References 10 publications

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“…Finding literature studies that comprehensively describe such situations is still difficult. Indeed, to the best of the authors' knowledge, the only studies that considered such an aspect were those by Mei et al [25], Pyl et al [26], and Todoroki et al [27]. Mei et al [25] evaluated the tensile properties of mixed-isotropic 3D-printed composites after hot pressing.…”

Section: Introductionmentioning

confidence: 99%

Effect of the fiber orientation on the tensile and flexural behavior of continuous carbon fiber composites made via fused filament fabrication

Parmiggiani

Prato

Pizzorni

2021

Int J Adv Manuf Technol

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Recent years have seen the wide diffusion of composite materials in many manufacturing fields and the rapid evolution of additive manufacturing. Lately, these technologies have been combined practically allowing the fabrication of continuous-fiber reinforced polymer parts via 3D-printing. This topic is gaining attention both in the research community and among industrial users. Because of their novelty, such manufacturing methods are, however, still not thoroughly understood, and their performance limits have not yet been fully characterized. This study aims at analyzing the mechanical resistance of components made with continuous carbon fiber (CCF) thermoplastic materials by means of fused filament fabrication (FFF), focusing on the influence of the fiber orientation on such properties. In particular, both the tensile and the bending characteristics are evaluated according to the relative test standards, in specimens with both unidirectional and mixed-isotropic configurations. The experimental findings are compared with a set of reference specimens made with a base polymer filled with chopped “short” carbon fibers, allowing one to appreciate the advantages or limitations of the different fiber arrangements.

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Section: Introductionmentioning

confidence: 99%

Effect of the fiber orientation on the tensile and flexural behavior of continuous carbon fiber composites made via fused filament fabrication

Parmiggiani

Prato

Pizzorni

2021

Int J Adv Manuf Technol

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“…Tensile testing on the laminate of unidirectional plies (UD) (0° or 90°) has been widely considered to evaluate the tensile modulus and the tensile strength of 3D printed composites. In general, tensile testing conducted in the case of 0° UD composites (along printing line/fiber direction) exhibited an elongation at the break in the range of 1–5% of the strain ( Figure 4 a), whereas the tensile modulus and strength varied significantly from one study to another study, depending on the composite design (tensile modulus in the range of 2.4–61 GPa, tensile strength in the range of 27–700 MPa) [ 28 , 29 , 30 ]. Compared to CFRTPCs fabricated by conventional methods, and for a similar fraction of fibers, 3D printed CFRTPCs exhibited a similar or even higher tensile strength, but an elastic modulus four to five times lower, as shown in the case of carbon fiber-reinforced PA [ 29 ].…”

Section: Structure Optimizationmentioning

confidence: 99%

“…Accordingly, the presence of pores is currently being introduced in the model predicting the elastic modulus of 3D printed TP [ 17 ]. The tensile properties for 90° UD composites are obviously lower than for 0° UD composites, the three different kinds of interfaces being highly solicited [ 28 , 30 ]. One limitation of such tensile testing is that it provides the overall macroscopic mechanical signature of the printed structure, including the deformation signature of the matrix to a certain extent, and the failure signature of all the interfaces, as represented in Figure 4 a.…”

Section: Structure Optimizationmentioning

confidence: 99%

Fused Filament Fabrication of Polymers and Continuous Fiber-Reinforced Polymer Composites: Advances in Structure Optimization and Health Monitoring

et al. 2021

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3D printed neat thermoplastic polymers (TPs) and continuous fiber-reinforced thermoplastic composites (CFRTPCs) by fused filament fabrication (FFF) are becoming attractive materials for numerous applications. However, the structure of these materials exhibits interfaces at different scales, engendering non-optimal mechanical properties. The first part of the review presents a description of these interfaces and highlights the different strategies to improve interfacial bonding. The actual knowledge on the structural aspects of the thermoplastic matrix is also summarized in this contribution with a focus on crystallization and orientation. The research to be tackled to further improve the structural properties of the 3D printed materials is identified. The second part of the review provides an overview of structural health monitoring technologies relying on the use of fiber Bragg grating sensors, strain gauge sensors and self-sensing. After a brief discussion on these three technologies, the needed research to further stimulate the development of FFF is identified. Finally, in the third part of this contribution the technology landscape of FFF processes for CFRTPCs is provided, including the future trends.

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“…Printed specimens had poor dimensional accuracy and surface smoothness. Todoroki et al [41] studied the tensile and shear strength properties of Nylon/CCF composites printed with 0, ±45 and 90° filling patterns. Lack of dimensional accuracy and low quality was observed in the corners of the printed samples.…”

Section: Introductionmentioning

confidence: 99%

Calculating Printing Speed for Polylactic Acid/Continuous Glass Fiber Composites via Fused Filament Fabrication

Akhoundi¹,

Nabipour²,

Kordi³

et al. 2020

Preprint

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In this study, a novel task of printing speed optimization for continuous fiber composites is investigated. Using continuous fibers is an innovative approach to reinforce products made by fused filament fabrication (FFF) additive manufacturing (AM) technology. In the printing process of composites with continuous fibers, the printing speed is critical because of its significant effect on the geometric shape of the samples, especially their corners. During optimization in this research, continuous glass fiber (CGF) and polylactic acid (PLA) filaments were utilized as reinforcing phase and matrix, respectively, and were simultaneously fed into the extrusion-based polymer 3D printer to form PLA/CGF composites. The optimization was carried out by calculating the temperature changes of the deposited rasters in the presence and absence of fibers as a first step and then determining the special relationship between the printing speeds and rasters temperature changes. Finally, the optimal and the maximum printing speed was computed based on a hypothesis, which is proved by the results of high-quality printed composites with different geometric shapes.

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Tensile property evaluations of 3D printed continuous carbon fiber reinforced thermoplastic composites

Cited by 78 publications

References 10 publications

Effect of the fiber orientation on the tensile and flexural behavior of continuous carbon fiber composites made via fused filament fabrication

Effect of the fiber orientation on the tensile and flexural behavior of continuous carbon fiber composites made via fused filament fabrication

Fused Filament Fabrication of Polymers and Continuous Fiber-Reinforced Polymer Composites: Advances in Structure Optimization and Health Monitoring

Calculating Printing Speed for Polylactic Acid/Continuous Glass Fiber Composites via Fused Filament Fabrication

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