Investigation on the effect of functionalization of single-walled carbon nanotubes on the mechanical properties of epoxy glass composites: Experimental and molecular dynamics simulation

Qian, Wei-Mao; Vahid, Mohammad Hossein; Sun, Yi; Heidari, Ali; Barbaz‐Isfahani, Reza; Saber‐Samandari, Saeed; Khandan, Amirsalar; Toghraie, Davood

doi:10.1016/j.jmrt.2021.03.104

Cited by 69 publications

(26 citation statements)

References 53 publications

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“…Godara et al 38 determined the properties of the fiber-matrix interface for different methods applied to incorporate the CNTs in the FRC and concluded that significant improvement of IFSS can be achieved in composites modified with CNTs. The aforementioned finding was later confirmed by Ma and Zhang 39 and Qian et al, 40 particularly when depositing functionalized CNTs for uniform distribution and stronger bonding between the epoxy matrix and CNTs.…”

Section: Introductionmentioning

confidence: 60%

Effect of 0.5% CNT reinforcement of a glass fiber composite on strength and cyclic damage induced by transverse and out-of-plane compressive loads

Salas

Oñate

Escudero

et al. 2022

Journal of Composite Materials

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The impact of the addition of 0.5 wt% multiwall carbon nanotubes (MWCNT) on the quasi-static transverse compressive resistance and damage evolution of unidirectional glass fiber reinforced composite (FRC) fabricated by resin transfer molding is investigated. The degradation of macroscopic mechanical properties such as elastic modulus and compressive strength vs. plastic strains are correlated with crack density and microcrack propagation behavior including analysis of failure phenomena such as interface debonding, matrix cracking and interface cracking. The experimental campaign includes compression tests with monotonic and cyclic loads on cubic specimens in the out-of-plane (0°) and transverse (90°) directions for masterbatch MWCNT-based and CNT-free glass FRC. In the monotonic case, the elastic modulus and maximum compressive strength increased for the glass FRC with 0.5 wt% CNTs, particularly in the transverse (0°) direction by 11% and 13%, respectively. Under cyclic loading, the elastic modulus degradation stagnates at a lower plastic deformation for composite with 0.5 wt% CNTs. In addition, CNTs reduces by 20% the cumulative plastic deformation in the 0° direction and almost 30% in the 90° direction. At the microscopic scale, image analysis showed that the CNTs improved the properties of the interface by delaying decohesion failure and reducing by around 30% and 40% the computed crack density in the 0° and 90° loading direction, respectively. In addition, image analysis in the out-of-plane direction (0°) shows that fiber-matrix decohesion is predominant before crack propagation at the interlaminar level and prior to final failure. By contrast, at 90° loadings, no decohesion is observed and crack propagation is almost purely interlaminar. Finally, the addition of 0.5% MWCNTs to the glass FRC increases the mechanical resistance of the composite material in the transverse direction demonstrated by the delaying of cracks during the failure analysis of different cycles as well as the decrease of the elastic modulus degradation and increase of compressive strength.

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Section: Introductionmentioning

confidence: 60%

Effect of 0.5% CNT reinforcement of a glass fiber composite on strength and cyclic damage induced by transverse and out-of-plane compressive loads

Salas

Oñate

Escudero

et al. 2022

Journal of Composite Materials

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“…One of the most efficient methods for predicting the influence of diverse parameters on the physical properties of materials is a numerical simulation. [29][30][31][32][33][34][35][36] As a case in point, Mohonee et al 31 investigated the effect of microcapsules on the mechanical performance of microcapsule-based polymeric composites using a multi-scale RVE model. They discovered that microcapsules filled with epoxy can be regarded as a reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation on the effect of core-shell microcapsule sizes on mechanical properties of microcapsule-based polymers

Teimouri

Barbaz‐Isfahani

Saber‐Samandari

et al. 2022

Journal of Composite Materials

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In this study, the effect of various microcapsule sizes on the mechanical properties of microcapsule-based polymeric materials was investigated using the finite element method and validated with experimental outcomes. Specimens containing 5wt. % of microcapsules were fabricated to calculate the elastic modulus, and maximum tensile stress, and to validate numerical results. To consider the error, five tests were performed for all samples, and results were reported on average. The average errors between the numerical outcomes and experimental results were 4.74% and 5.35% for maximum tensile stress and elastic modulus, respectively. The coaxial electrospraying method was used for synthesizing microcapsules made of alginate (shell) and epoxy (core). A scanning electron microscope (SEM) was used to calculate the diameter of the capsules. To develop an empirical model for the average microcapsule diameter (AMD) and carry out the optimization process, response surface methodology (RSM) with central composite design was used. Also, analysis of variance was employed to validate the accuracy of the model. The effects of three parameters, including voltage, needle size, and the distance between the tip of the needle to the collector, on average microcapsule diameter, were investigated. The empirical model was validated by a confirmation run, and the determined error (1.93%) between the predicted and experimental results indicates the precision of the model. The numerical study indicated that microcapsule-based self-healing polymers containing smaller microcapsules tolerate higher stresses. However, the effect of the microcapsules’ size on the elastic modulus of a representative volume element was negligible.

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“…It is not possible to perform more complex analysis, such as wave propagation analysis using the experimental analysis method. The second method used in the investigation of nanoscale structures is atomic simulations (molecular dynamics) [ 40 , 41 ]. The atomic simulations method can give optimum results in the analysis of small-scale systems for small time intervals.…”

Section: Introductionmentioning

confidence: 99%

Behaviors of Electromagnetic Wave Propagation in Double-Walled Carbon Nanotubes

Basmaci

2021

Materials

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In this study, behaviors of electromagnetic wave propagation in a double-walled carbon nanotube (DWCNT) are investigated theoretically. For this purpose, the effects of carbon nanotube’s inner and outer tubes’ material property parameters (μ, ε) on electromagnetic wave propagation are discussed. The effects of interaction between the carbon nanotube’s inner and outer tubes on the electromagnetic wave propagation are defined. Nonlocal effects of the DWCNT on electromagnetic wave propagation are examined. Besides, the electromagnetic wave propagation frequencies are specifically investigated, taking the DWCNT’s nonlocal effects and material property parameters (ε, µ) into account. When the wavenumber, k, is greater than 1.8 × 1010, the frequencies of the fundamental mode and the second mode converge to 3.554 × 108 Hz. Additionally, the electromagnetic wave propagation frequencies decrease with the increase of the DWCNT’s nonlocal parameter (ν) and decrease with material parameter (D).

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Investigation on the effect of functionalization of single-walled carbon nanotubes on the mechanical properties of epoxy glass composites: Experimental and molecular dynamics simulation

Cited by 69 publications

References 53 publications

Effect of 0.5% CNT reinforcement of a glass fiber composite on strength and cyclic damage induced by transverse and out-of-plane compressive loads

Effect of 0.5% CNT reinforcement of a glass fiber composite on strength and cyclic damage induced by transverse and out-of-plane compressive loads

Experimental and numerical investigation on the effect of core-shell microcapsule sizes on mechanical properties of microcapsule-based polymers

Behaviors of Electromagnetic Wave Propagation in Double-Walled Carbon Nanotubes

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