A comparison of CFRP composite laminated joints fabricated with vacuum assisted resin transfer molding

Asadi, Amir; Abusrea, Mahmoud; Arakawa, Kazuo; Colton, Jonathan S.; Kalaitzidou, Kyriaki

doi:10.3144/expresspolymlett.2018.67

Cited by 9 publications

(5 citation statements)

References 26 publications

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“…Generally, coating fibers with CNTs enhance the out-of-plane properties because they act as nanopins between neighboring layers that can, in turn, retard delamination. Although delamination is a major damage mode that can lead to catastrophic failure in both tensile and flexural loading types, in flexural loading, delamination usually occurs concurrently with other damage modes such as matrix cracking and thus is more susceptible to interlayer adhesion compared to tensile loading, where delamination usually appears at the final loading stages. , …”

Section: Resultsmentioning

confidence: 99%

“…Although delamination is a major damage mode that can lead to catastrophic failure in both tensile and flexural loading types, in flexural loading, delamination usually occurs concurrently with damage modes such as matrix cracking and thus is more susceptible to interlayer adhesion compared to tensile loading, where delamination usually appears at the final loading stages. 93,94 3.4.2. Interlaminar Strength.…”

Section: Cnc-pcnt Dispersion and Stability In Watermentioning

confidence: 99%

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Hybrid Cellulose Nanocrystal-Bonded Carbon Nanotubes/Carbon Fiber Polymer Composites for Structural Applications

Shariatnia

Kumar

Kaynan

et al. 2020

ACS Appl. Nano Mater.

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Integrating carbon nanotubes (CNTs) in carbon-fiber-reinforced-polymer (CFRP) composites enhances structural and functional properties; however, it often involves chemical functionalization or processes that lead to inhomogeneous dispersion and nonuniform distribution of CNTs that impair the final properties and hinder manufacturing scalability. Herein, we present a novel and scalable processing technique to integrate pristine CNTs (pCNTs) into CFRP composites without the need for chemical functionalization or addition of surfactants. We use cellulose nanocrystals (CNCs) as assisting nanomaterials to uniformly disperse and stabilize pCNTs in water, and then we coat carbon fibers (CFs) with CNC-pCNT prior to resin infusion. Two coating methods are used: simple immersion (I-coating) and simultaneous immersion and sonication (IS-coating). The surface chemistry of coated CFs reveals that I-coating provides a higher quantity of polar oxygen groups in coated CFs containing CNC-pCNT compared to IS-coating. We show that fabricating hybrid CFRPs by incorporating 0.2 wt % CNC–0.2 wt % pCNT in CFRP composites using this simple technique enhances the flexural strength by 33% and the interlaminar shear strength (ILSS) by 35% compared to those of neat CFRPs. Significantly, 0.2CNC-0.2pCNT-CFRPs show ∼25% higher flexural strength and ILSS compared to the largest enhancement in composites with individual functionalized CNTs (fCNTs) or CNCs, demonstrating a synergistic effect of CNC-pCNT in enhancing properties. Moreover, our results indicate that incorporating CNC-pCNT increases the thermal stability of CFs compared to those of fCNTs. These are specifically crucial in composites used in structural applications. These results highlight that the introduced CNC-enabled processing technique is a potential scalable path toward the fabrication of hybrid composites that can enhance properties higher than individual CNTs or CNCs, avoiding costly and/or time-inefficient functionalization processes.

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Section: Resultsmentioning

confidence: 99%

Section: Cnc-pcnt Dispersion and Stability In Watermentioning

confidence: 99%

Hybrid Cellulose Nanocrystal-Bonded Carbon Nanotubes/Carbon Fiber Polymer Composites for Structural Applications

Shariatnia

Kumar

Kaynan

et al. 2020

ACS Appl. Nano Mater.

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“…The physical and mechanical properties of the glass fiber and the epoxy resin are shown in Table 2 and Table 3, respectively. The test blocks were fabricated by laminating eight plies of the glass fiber using VARTM, [22][23][24][25] as shown in Figure 1. The VARTM process consists of three steps: fabricating a vacuum package, infusing the resin, and molding.…”

Section: Methodsmentioning

confidence: 99%

Empirical modeling of force and temperature in drilling bone-simulating hybrid composites

Abusrea

Ahmadi

Sadek

2023

Journal of Composite Materials

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Hybrid polymer composites are utilized in biomechanical design and orthopedic surgery training to imitate the thermomechanical behavior of human bones. Despite extensive research on the mechanics of hybrid composites in biomechanical design, information on their thermomechanical response during orthopedic drilling operations is scarce. This paper presents a new experimental study to characterize the force and temperature generated during the drilling of hybrid composites that simulate human bones. To simulate the hybrid multi-layer structure of bones, the studied composite comprises a Polyurethane core sandwiched between Glass-Fiber Reinforced Polymer (GFRP) layers—the former resembling the cancellous part of the bone and the latter cortical layers. This study also identifies an empirical relationship between thrust force, temperature, drilling feed and speed, and composite composition. Empirical models are developed using multivariate polynomial regression (MPR) and artificial neural network (ANN) to predict the force and temperature during drilling. The models have a correlation coefficient of above 0.9 between predicted and measured results and can be used to improve orthopedic drilling design and control.

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“…As a result, more attention is paid to these materials and their potential. [1] Composite materials are often compared with metals and their properties. In terms of strength, nearly, the same characteristics can be achieved with lower weight.…”

Section: Introductionmentioning

confidence: 99%

Achieving Pseudo‐Ductile Behavior of Carbon Fiber Reinforced Polymer Composites via Interfacial Engineering

2020

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This article presents an investigation of the properties of interfacial engineered carbon fiber (CF) reinforced polymer (CFRP) composites. Poly(ϵ-caprolactone) (PCL) is used as an interface engineering/interlayer material to modify the interfacial shear strength (IFSS) between the phases, with which it is aimed to increase the pseudo-ductility of CFRPs. A stable crack propagation behavior can be achieved through interfacial engineering due to the locally weakened connection between the resin and the fiber reinforcement. Various grid patterns of PCL interfacial additive are designed, and 3D printed on the unidirectional (UD) CF (UDCF) surfaces by fused deposition modeling (FDM) and the UDCF is infiltrated with an amine-cured epoxy (EP). The resulting composites are subjected to mechanical tests. In each case, the PCL-rich interphase increases ductile pseudo-behavior, and the type of grid affects the mechanical response.

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A comparison of CFRP composite laminated joints fabricated with vacuum assisted resin transfer molding

Cited by 9 publications

References 26 publications

Hybrid Cellulose Nanocrystal-Bonded Carbon Nanotubes/Carbon Fiber Polymer Composites for Structural Applications

Hybrid Cellulose Nanocrystal-Bonded Carbon Nanotubes/Carbon Fiber Polymer Composites for Structural Applications

Empirical modeling of force and temperature in drilling bone-simulating hybrid composites

Achieving Pseudo‐Ductile Behavior of Carbon Fiber Reinforced Polymer Composites via Interfacial Engineering

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