Injection repair of CFRP using a multi-Wall carbon nanotubes-modified epoxy resin: Flexural and compression behavior

Shin, Joon-Hyung; Choe, Hyeon-Seok; Lee, Jun-sung; Kweon, Jin‐Hwe; Nam, Young‐Woo

doi:10.1177/00219983221131619

Cited by 4 publications

(1 citation statement)

References 53 publications

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“…Due to the exceptional high aspect ratio, modulus and strength, and corrosion resistance, the light carbon nanotubes (CNTs) have become potential substitute of microscale carbon fibers as the new reinforcement fillers. 1,2 To take full advantage of CNT strengthening ability in low content, Shen 3 combined the notion of functionally graded materials (FGMs) and CNT reinforcement to achieve a new type of nanocomposite with the designable microstructures. Functionally graded (FG) CNT composites possess outstanding thermal and mechanical properties varying smoothly and continuously through one or multidirections.…”

Section: Introductionmentioning

confidence: 99%

Symmetric SPH modeling of functionally graded nanocomposite plates subjected to low‐velocity impact

Li,

Lin,

Naceur

et al. 2023

Polymer Composites

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Functionally graded (FG) composites reinforced by carbon nanotubes (CNTs) have received extensive attention due to their excellent mechanical properties. The impact responses of FG‐CNT nanocomposites are analyzed by the developed meshless method. The temperature‐dependent material properties are expressed by way of the extended rule of mixture. The kinematics of the composite plate is established on the basis of the first‐order shear deformation theory. The modified Hertzian contact law is adopted to evaluate the impact loading between the plate and the impactor. The dynamic balance equations of the plate are constructed and computed by the Systemic Smoothed Particle Hydrodynamics (SSPH) method with strengthened prediction ability. The impacting behaviors of the FG‐CNT nanocomposite plate, as well as the parametric effects, are analyzed by the developed model and the suitability is clearly demonstrated.Highlights Impact of FG‐CNTRC is firstly solved by a self‐developed meshless SPH model. Strong capacity of the SPH impact model is clearly demonstrated. More CNTs close to the strike face would improve the impact resistance.

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Section: Introductionmentioning

confidence: 99%

Symmetric SPH modeling of functionally graded nanocomposite plates subjected to low‐velocity impact

Li,

Lin,

Naceur

et al. 2023

Polymer Composites

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Repairing of recycled hybrid carbon fiber laminates

Proietti,

Quadrini,

Santo

2024

Polymer Composites

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Compression molded hybrid laminates have been manufactured by stacking 10 recycled epoxy‐based carbon fiber plies with interlaminar polyamide film of 50 μm thickness. At first, carbon fiber (CF) reinforced composites underwent thermo‐mechanical disassembly to obtain single composite CF plies. These plies, still impregnated with the waste cured resin, have been re‐assembled by interposing one or two sheets of the thermoplastic film in the lamination sequence. Neat laminates have been used for comparison. Samples of size 85 × 30 mm2 have been tested under bending load, and materials repairability has been evaluated under 2 consecutive repairing cycles that have been carried out by applying pressure and heat along the composite failure line. Even though the neat composite showed the best mechanical properties, after the first repairing cycle a drastic drop has been recorded with a reduction of the elastic modulus of 92.4%. On the other hand, the elastic modulus of the hybrid composites has been reduced of only 24% on average.Highlights Thermo‐mechanical disassembly is used to recycle epoxy carbon fiber composite. Hybrid laminates are obtained by placing polyamide film between recycled plies. Pressure and heat are applied along the composite failure line for repairing. Hybrid composites repairing is carried out in comparison with neat materials. Repaired hybrid laminates have a higher elastic modulus than neat once.

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Carbon nanotube characteristics and enhancement effects on the mechanical features of polymer-based materials and structures – A review

Ali¹,

Koloor²,

Alshehri³

et al. 2023

Journal of Materials Research and Technology

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Injection repair of CFRP using a multi-Wall carbon nanotubes-modified epoxy resin: Flexural and compression behavior

Cited by 4 publications

References 53 publications

Symmetric SPH modeling of functionally graded nanocomposite plates subjected to low‐velocity impact

Symmetric SPH modeling of functionally graded nanocomposite plates subjected to low‐velocity impact

Repairing of recycled hybrid carbon fiber laminates

Carbon nanotube characteristics and enhancement effects on the mechanical features of polymer-based materials and structures – A review

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