A review of the structural factors which control compression in carbon fibres and their composites

Nunna, Srinivas; Ravindran, Anil R.; Mroszczok, Jens; Creighton, Claudia; Varley, Russell J.

doi:10.1016/j.compstruct.2022.116293

Cited by 16 publications

(8 citation statements)

References 156 publications

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“…Voids act as geometrical stress raisers by promoting microcracking and causing local fiber misalignment. , Interlaminar properties between the plies and interfacial properties between the matrix and the fibers can significantly impact the compressive strength and alter the failure mode. On the other hand, the compressive modulus, although related to voids, defects, and interlaminar properties, is comparatively less affected compared to the compressive strength Figure a,b illustrates that the accelerated VBO (with a polymer NPN)-cured CFRP exhibited a significant 18% increase in compressive strength (493.2 to 581.4 MPa) and a 46% increase in compressive strain-at-failure (0.96 to 1.40%), attributed to its higher ILSS provided by the polymer NPN.…”

Section: Large-scale Cfrp Laminate Processing Via Accelerated Vbo Cur...mentioning

confidence: 96%

“…For CFRP with a multidirectional layup, such as a quasi-isotropic layup used here, the compressive failure behavior can be complex due to the placement of angle plies having a significant influence on the failure mechanism and the propagation of damage, particularly interactions between ply level damage and interlaminar damage (delaminations) . For the [0/90/±45] 2s layup utilized in this study, damage initiation typically occurs due to ply level shear failure adjacent to the midplane, with deep delamination at the 45°/–45° ply interface reported in previous literature .…”

Section: Large-scale Cfrp Laminate Processing Via Accelerated Vbo Cur...mentioning

confidence: 99%

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Manufacturing Autoclave-Grade Thermoset Carbon Fiber-Reinforced Polymer Aerospace Composites without an Autoclave Using Nanoporous Materials

Li,

Hank,

Kalfon-Cohen

et al. 2024

ACS Appl. Mater. Interfaces

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Composite laminates utilizing autoclave-grade carbon fiber-reinforced plastic (CFRP) prepreg were manufactured using a polymer nanoporous network (NPN) interlayer that generates capillary pressure in lieu of pressure from an autoclave. The polymer nanofiber NPN film is integrated into the interlaminar region and is shown to eliminate voids in a vacuumbag-only (VBO) curing process. After a preliminary investigation of the effect of NPN thickness on the interlaminar region and performance, an 8 μm thick polymer NPN was selected for a scaled manufacturing demonstration. Combining the polymer NPN with "out-of-oven" (OoO) electrothermal heating of a carbon nanotube (CNT)-heated tool, a 0.6 × 0.6 m void-free plate is successfully manufactured. OoO cure enables an accelerated cure cycle, which reduces the cure time by 35% compared to the manufacturerrecommended cure cycle (MRCC). X-ray microcomputed tomography (μ-CT) reveals that the laminates are void-free and of identical quality to autoclave-cured specimens. An array of mechanical tests including tension, compression, open-hole compression (OHC), tension-bearing (bolt-bearing), and compression after impact, reveal that the accelerated NPN-cured composites were broadly equivalent, with some instances of improved properties, relative to the autoclave-cured parts, e.g., OHC strength increased by 5%. With reduced capital costs, energy consumption, and increased throughput, the facile polymer NPN-enabled out-of-autoclave (OoA) fabrication method is shown to be a practical and attractive alternative to conventional autoclave fabrication.

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Section: Large-scale Cfrp Laminate Processing Via Accelerated Vbo Cur...mentioning

confidence: 96%

Section: Large-scale Cfrp Laminate Processing Via Accelerated Vbo Cur...mentioning

confidence: 99%

Manufacturing Autoclave-Grade Thermoset Carbon Fiber-Reinforced Polymer Aerospace Composites without an Autoclave Using Nanoporous Materials

Li,

Hank,

Kalfon-Cohen

et al. 2024

ACS Appl. Mater. Interfaces

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“…Firstly, the resin solution containing GO was prepared, and the specific preparation for it was shown in Figure 1 and was as follows: (1) The GO particles were added to 12 g of anhydrous ethanol, and then they were electromagnetically stirred to initial dispersion of GO in anhydrous ethanol. The stirring speed was 300 rpm, and the time was 30 min.…”

Section: Preparation Of Go-cf/bf Hybrid Compositesmentioning

confidence: 99%

“…However, the high price leads to its application in aerospace fields, such as antennae and intelligent release devices. [1][2][3] To reduce the cost and expand the application range, the hybrid composite material composes a kind of ductile fiber and carbon fiber. Compared with glass fiber and plant fiber, basalt fiber has higher flexural strength and better resin adhesion.…”

Section: Introductionmentioning

confidence: 99%

“…Carbon fiber composites with high strength, modulus, stiffness, and low density are widely used in lightweight structures. However, the high price leads to its application in aerospace fields, such as antennae and intelligent release devices 1–3 . To reduce the cost and expand the application range, the hybrid composite material composes a kind of ductile fiber and carbon fiber.…”

Section: Introductionmentioning

confidence: 99%

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Influence of extrusion pressures on shape memory properties of carbon fiber/basalt fiber hybrid composites with graphene oxide fabricated by the vacuum infiltration hot pressing system

et al. 2023

Polymer Composites

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This work investigated the extrusion pressure‐microstructure‐shape memory properties relationship of carbon fiber/basalt fiber hybrid composites with graphene oxide (GO‐CF/BF hybrid composites), and the associated mechanism was systematically discussed. GO‐CF/BF hybrid composites were fabricated by the vacuum infiltration hot pressing system (VIHPS). The critical infiltration pressure of the composite was calculated according to the dynamic infiltration model, and it was 0.09 MPa. The microstructure and shape memory properties were analyzed by scanning electron microscopy (SEM) and a shape memory testing system. The results showed that the shape fixation ratio first decreased and then increased, but the shape recovery ratio and the shape recovery force tended to initially increase and subsequently decrease with the increase in extrusion pressure. This was mainly determined by void defects. When the extrusion pressure was 0.5 MPa, the shape memory properties of the composite were excellent. Furthermore, with the increase in cycle times, GO‐CF/BF hybrid composites were damaged, and the shape memory properties all decreased. When the extrusion pressure was 0.7 MPa, fiber fracture and delamination appeared in composites, and the shape memory properties deteriorated significantly. However, when the extrusion pressure was 0.5 MPa, the fiber was fractured slightly, and the shape memory properties degenerated vaguely.

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Drop-weight impact and compressive behavior of graphene-based carbon fiber-reinforced polymer composites

Kumar,

Sharma,

Dixit

2024

Polym. Bull.

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A review of the structural factors which control compression in carbon fibres and their composites

Cited by 16 publications

References 156 publications

Manufacturing Autoclave-Grade Thermoset Carbon Fiber-Reinforced Polymer Aerospace Composites without an Autoclave Using Nanoporous Materials

Manufacturing Autoclave-Grade Thermoset Carbon Fiber-Reinforced Polymer Aerospace Composites without an Autoclave Using Nanoporous Materials

Influence of extrusion pressures on shape memory properties of carbon fiber/basalt fiber hybrid composites with graphene oxide fabricated by the vacuum infiltration hot pressing system

Drop-weight impact and compressive behavior of graphene-based carbon fiber-reinforced polymer composites

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