Bending fracture rule for 3D-printed curved continuous-fiber composite

Ishii, Kouki; Todoroki, Akira; Mizutani, Yoshihiro; Suzuki, Yoshiro; Koga, Yoichiro; Matsuzaki, Ryosuke; Ueda, Masahiro; Hirano, Yoshiyasu

doi:10.1080/09243046.2018.1558327

Cited by 31 publications

(8 citation statements)

References 32 publications

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“…Flexural properties as well as the folding mechanisms in the bending areas of the print path were especially influenced by the geometrical shape of the cross section. Curved sections are therefore particularly responsible for effects of introduced tensions in the composite part [ 11 ].…”

Section: Materials and Methodsmentioning

confidence: 99%

Additive Manufacturing-Based In Situ Consolidation of Continuous Carbon Fibre-Reinforced Polycarbonate

et al. 2021

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Continuous carbon fibre-reinforced thermoplastic composites have convincing anisotropic properties, which can be used to strengthen structural components in a local, variable and efficient way. In this study, an additive manufacturing (AM) process is introduced to fabricate in situ consolidated continuous fibre-reinforced polycarbonate. Specimens with three different nozzle temperatures were in situ consolidated and tested in a three-point bending test. Computed tomography (CT) is used for a detailed analysis of the local material structure and resulting material porosity, thus the results can be put into context with process parameters. In addition, a highly curved test structure was fabricated that demonstrates the limits of the process and dependent fibre strand folding behaviours. These experimental investigations present the potential and the challenges of additive manufacturing-based in situ consolidated continuous fibre-reinforced polycarbonate.

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Section: Materials and Methodsmentioning

confidence: 99%

Additive Manufacturing-Based In Situ Consolidation of Continuous Carbon Fibre-Reinforced Polycarbonate

et al. 2021

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“…Yang et al [17] used a new printing method of continuous fiber hot-dipped resin material to study the bending and tensile strength. Ishii et al [18] studied the bending fracture rule for 3D-printed curved continuous-fiber composite. Lozada et al [19] and Klift et al [20] studied the effect of path on tensile properties and failure behavior.…”

Section: Introductionmentioning

confidence: 99%

Bending properties and failure behavior of 3D printed fiber reinforced resin T‐beam

Shan

Chen

et al. 2022

Polymer Composites

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Fiber-reinforced resin T-beams have a wide range of applications. The forming of T-beams based on the fused deposition process provides a new method for its manufacture. This paper studied the key process parameters of 3D printing continuous fiber and short fiber reinforced resin T-beams. The results show that continuous fiber reinforced resin T-beams with similar fiber volume fractions have better bending performance than shorter fiber reinforced resin Tbeams. When the printing layer thickness is 0.7 mm, 0.8 mm and 0.9 mm, the flexural strength and modulus of the continuous fiber reinforced resin T-beam are obviously lower with the increase of the layer thickness. Under the printing path 0 , ±45 , 90 , the short fiber reinforced resin T-beam with the 0 path has the highest flexural strength and modulus. Furthermore, T-beam with different printing path have significantly different bending failure behavior. The work provided a new approach to the production of beam structures of the actual engineering application.

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“…Defects specific to the FFF process (high void content, poor interlayer bonding, and inhomogeneous fibers distribution) have a significant impact on the strength to interlaminar shear and on the breaking behavior of 3D-printed specimens [ 23 , 24 , 25 , 26 , 27 ]. However, researchers have studied and significantly improved the mechanical performance of composites reinforced with continuous fibers, using various types of tests as compression [ 28 , 29 ], tensile [ 30 , 31 , 32 ], bending [ 33 , 34 , 35 ], fatigue [ 36 , 37 ], and impact [ 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

Compression and Bending Properties of Short Carbon Fiber Reinforced Polymers Sandwich Structures Produced via Fused Filament Fabrication Process

et al. 2022

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Additive manufacturing, through the process of thermoplastic extrusion of filament, allows the manufacture of complex composite sandwich structures in a short time with low costs. This paper presents the design and fabrication by Fused Filament Fabrication (FFF) of composite sandwich structures with short fibers, having three core types C, Z, and H, followed by mechanical performance testing of the structures for compression and bending in three points. Flatwise compression tests and three-point bending have clearly indicated the superior performance of H-core sandwich structures due to dense core structures. The main modes of failure of composite sandwich structures were analyzed microscopically, highlighting core shear buckling in compression tests and face indentation in three-point bending tests. The strength–mass ratio allowed the identification of the structures with the best performances considering the desire to reduce the mass, so: the H-core sandwich structures showed the best results in compression tests and the C-core sandwich structures in three-point bending tests. The feasibility of the FFF process and the three-point bending test of composite wing sections, which will be used on an unmanned aircraft, have also been demonstrated. The finite element analysis showed the distribution of equivalent stresses and reaction forces for the composite wing sections tested for bending, proving to validate the experimental results.

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Bending fracture rule for 3D-printed curved continuous-fiber composite

Cited by 31 publications

References 32 publications

Additive Manufacturing-Based In Situ Consolidation of Continuous Carbon Fibre-Reinforced Polycarbonate

Additive Manufacturing-Based In Situ Consolidation of Continuous Carbon Fibre-Reinforced Polycarbonate

Bending properties and failure behavior of 3D printed fiber reinforced resin T‐beam

Compression and Bending Properties of Short Carbon Fiber Reinforced Polymers Sandwich Structures Produced via Fused Filament Fabrication Process

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