Continuum Modeling of Interfaces in Polymer Matrix Composites Reinforced by Carbon Nanotubes

Jiang, Liying; Tan, Henry; Wu, Jian; Huang, Yonggang; Hwang, Keh Chih

doi:10.1142/s1793292007000519

Cited by 25 publications

(7 citation statements)

References 76 publications

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“…It is evident that the interfacial normal cohesive stress of the interface between the Gr and Al (111) is the highest. The curves can be divided into two stages [40]. First, the cohesion of the interface rises rapidly and reaches its peak with the increase of displacement.…”

Section: Resultsmentioning

confidence: 99%

Micro-Mechanism of Interfacial Separation and Slippage of Graphene/Aluminum Nanolaminated Composites

Zhu

Yang

et al. 2018

Nanomaterials

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Due to their excellent properties and two-dimensional geometry, graphenes (Grs) have been widely used as reinforced fillers in graphene/aluminum nanolaminated composite (GANC). The separation and slippage behavior of the GANC is highly dependent on the interfacial properties between Gr and aluminum (Al). In this study, two interfacial failures of GANCs, i.e., pull-up failure and pull-out failure, were investigated using a molecular dynamics (MD) method. The effects of the crystal orientation of single-crystal Al component and the geometry of the Gr component on the normal and shear interfacial properties of the GANC were examined. It was evident that the interfacial pull-up resistance resulted from the atomic forces of all the atoms at the interface, whereas the interfacial shear force during pull-out stems from the atomic forces of the atoms at the crack tip. In addition, the studies revealed that the interface bonding strength between the Gr and Al was sensitive to both the crystal orientation of the Al and the environmental temperature. Finally, the cohesive law was used to describe the interfacial behavior of the Gr and Al, providing the interfacial data for the finite element modeling of composites with Gr and Al interface.

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Section: Resultsmentioning

confidence: 99%

Micro-Mechanism of Interfacial Separation and Slippage of Graphene/Aluminum Nanolaminated Composites

Zhu

Yang

et al. 2018

Nanomaterials

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“…4,5 The addressable nanowires were grown in micron or sub-micron width and several micrometer lengths between pre-deposited gold electrodes with various materials like metals and conducting polymers. [9][10][11] This fabrication method is highly controllable, addressable, efficient, and attractive for large-scale integrated system with various materials that are possibly electrochemically deposited. While it has several benefits to overcome the drawbacks from other typical methods, it may cause unexpected dendrite or sparse structures in grown nanowires.…”

Section: Introductionmentioning

confidence: 99%

Highly Reproducible Single Polyaniline Nanowire Using Electrophoresis Method

Lee

Park

et al. 2008

NANO

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Site-specific single polyaniline nanowires were fabricated through electrophoresis growth with acetone wetting. After growing the nanowires, the post-process of acetone wetting of the nanowires improved morphology, topology, and electrical conductivity with coagulation and substitution in polyaniline. They showed resistance changes of 39.57 ± 11.57% and presented 2.38 × 10 −4 ± 3 × 10 −5 Ω · cm, 133.77 ± 13.82 nm thickness, and 133.17 ± 13.01 nm width in 1 µm to 5.5 µm length. The new combined growth process of electrophoresis and acetone wetting significantly improved reproducibility, reliability, and controllability in the fabrication of single polymer nanowires.

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“…In order to overcome the nanoscale experimental limitations, a significant amount of modeling research has been reported to study the molecular scale properties of composites using ab-initio quantum chemistry, density functional theory (DFT), and molecular dynamics (MD) methods [23][24][25][26][27][28][29][30]. MD generated properties of graphene nanoplatelets in epoxy were integrated within a multiscale model using GMC micromechanics by Hadden et al [23].…”

Section: Introductionmentioning

confidence: 99%

“…MD generated properties of graphene nanoplatelets in epoxy were integrated within a multiscale model using GMC micromechanics by Hadden et al [23]. Jiang et al [24,25] modeled the macroscopic behavior of CNT-reinforced nanocomposites using a form of the rule of mixtures. In their work, the interphase between the polymer matrix and a CNT is modeled as a wavy surface and a cohesive stress law is formulated based on the Lennard-Jones potential.…”

Section: Introductionmentioning

confidence: 99%

Modeling the molecular structure of the carbon fiber/polymer interphase for multiscale analysis of composites

Johnston

Koo

Subramanian

et al. 2017

Composites Part B: Engineering

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The carbon fiber/polymer matrix interphase region plays an important role in the behavior and failure initiation of polymer matrix composites and accurate modeling techniques are needed to study the effects of this complex region on the composite response. This paper presents a high fidelity multiscale modeling framework integrating a novel molecular interphase model for the analysis of polymer matrix composites. The interphase model, consisting of voids in multiple graphene layers, enables the physical entanglement between the polymer matrix and the carbon fiber surface. The voids in the graphene layers are generated by intentionally removing carbon atoms, which better represents the irregularity of the carbon fiber surface. The molecular dynamics method calculates the interphase mechanical properties at the nanoscale, which are integrated within a high fidelity micromechanics theory. Additionally, progressive damage and failure theories are used at different scales in the modeling framework to capture scale-dependent failure of the composite. Comparisons between the current molecular interphase model and existing interphase models and experiments demonstrate that the current model captures larger stress gradients across the material interphase. These large stress gradients increase the viscoplasticity and damage effects at the interphase which are necessary for improved prediction of the nonlinear response and multiscale damage in composite materials.

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Continuum Modeling of Interfaces in Polymer Matrix Composites Reinforced by Carbon Nanotubes

Cited by 25 publications

References 76 publications

Micro-Mechanism of Interfacial Separation and Slippage of Graphene/Aluminum Nanolaminated Composites

Micro-Mechanism of Interfacial Separation and Slippage of Graphene/Aluminum Nanolaminated Composites

Highly Reproducible Single Polyaniline Nanowire Using Electrophoresis Method

Modeling the molecular structure of the carbon fiber/polymer interphase for multiscale analysis of composites

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