Tensile Characterization of Carbon Nanotube-Reinforced Polymer Composites at Cryogenic Temperatures: Experimens and Multiscale Simulations

Takeda, Tomo; Shindo, Yasuhide; Narita, Fumio; Mito, Yuya

doi:10.2320/matertrans.mbw200817

Cited by 37 publications

(27 citation statements)

References 27 publications

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“…As the nanoscale of CNT, it is difficult to compare simulation results directly to experimental data. To validate the model, the tendency of Young's Modulus variation with the decrease of temperature for CNT reinforced polymer composites was compared with the experiment results in the literatures [27][28][29]. ANSYS 14.5 was used to create and analyze three-dimensional FEA models of the RVE.…”

Section: Modelling Proceduresmentioning

confidence: 99%

Stress transfer properties of carbon nanotube reinforced polymer composites at low temperature environments

Jia

Lam

Cheng

et al. 2016

Composites Part B: Engineering

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Multi-scale modeling method was used to study tensile properties of single-walled carbon nanotube (SWCNT) and double-walled carbon nanotube (DWCNT) reinforced polymer-based composites at room temperature (RT) and cryogenic temperature (like liquid nitrogen temperature 77K) conditions. At RT, Young's Modulus of a SWCNT M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT reinforced polymer composite is 1.88 times of a DWCNT reinforced polymer composite due to a weak interfacial bonding between layers of DWCNT, which is bound by the weak Van der Waal interaction. The Young's Modulus of DWCNT reinforced polymer composite is significantly improved with the decrease of temperature and the difference in Young's Modulus between SWCNT and DWCNT reinforced polymer composites has been largely reduced. The radial stress imposed on an outer surface of nanotubes due to the contraction of polymer at liquid nitrogen environment is examined to explain the stress transfer mechanism in a composite system. The extra stresses imposed on the surface of DWCNT increase bonding forces between outer and inner layers of DWCNT. This tendency agreed well with experimental results found in other literatures.

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Section: Modelling Proceduresmentioning

confidence: 99%

Stress transfer properties of carbon nanotube reinforced polymer composites at low temperature environments

Jia

Lam

Cheng

et al. 2016

Composites Part B: Engineering

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“…These phenomena could be attributed to the interfacial defects on the nanocomposite specimens that were produced during injection molding, and their number increased with increasing filler content [35]. Moreover, the three-point bending test is also sensitive to interfacial defects.…”

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confidence: 99%

Thermal behavior and mechanical properties of nanocomposites of polycarbonate reinforced with multiwalled carbon nanotubes

2015

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Nanocomposites of polycarbonate (PC) reinforced with different contents (0-10 wt%) of multi-walled carbon nanotubes (MWCNTs), PC/MWCNT, were prepared in a two-step dispersion process: extrusion followed by injection molding. The effects of the MWCNT content and injection conditions on thermal, mechanical, and dynamic mechanical properties of the prepared nanocomposites were investigated and compared. Thermogravimetric analysis showed that a small MWCNT content (i.e., 1 wt%) was more propitious for improving thermal stability of the nanocomposites. Analysis of the mechanical properties demonstrated that the tensile properties of the nanocomposites with low MWCNT content could be comparable to that of PC; but as the content was increased to 10 wt%, the tensile strength and bending strength decreased by 35 and 47%, respectively, from the values for PC. The impact strength and microhardness was improved; however, with the increase in MWCNT content. Results of dynamic mechanical analysis showed that the storage modulus of PC was increased by the incorporation of MWCNTs, particularly at high temperatures. Scanning electron microscopy was also carried out to investigate the microstructures of the nanocomposites.

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“…The elastic material properties are: Young's modulus E = 2.56 GPa and Poisson's ratio¯= 0.39. 17) Finite element solutions were obtained using a twodimensional plane stress model. In the model, the tab sections were not included.…”

Section: @S @ªmentioning

confidence: 99%

Crack and Electrical Resistance Behaviors of Carbon Nanotube-Based Polymer Composites under Mixed-Mode I/II Loading

et al. 2013

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This paper studies the crack and electrical resistance behaviors of carbon nanotube (CNT)-based polymer composites under mixed-mode I/II loading by theoretical and experimental approaches. Mixed-mode fracture tests were performed on single-edge cracked plate specimens of the nanocomposites, and the electrical resistance of the specimens was measured. Also, the crack growth direction was predicted by a fracture mechanics approach. In addition, an analytical model based on the electrical conduction mechanism of CNT-based composites was developed to describe the electrical resistance change as a result of inclined crack growth. The predictions on the crack growth direction and the crack induced resistance change were compared with the experimental data, and good agreements were found.

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Tensile Characterization of Carbon Nanotube-Reinforced Polymer Composites at Cryogenic Temperatures: Experimens and Multiscale Simulations

Cited by 37 publications

References 27 publications

Stress transfer properties of carbon nanotube reinforced polymer composites at low temperature environments

Stress transfer properties of carbon nanotube reinforced polymer composites at low temperature environments

Thermal behavior and mechanical properties of nanocomposites of polycarbonate reinforced with multiwalled carbon nanotubes

Crack and Electrical Resistance Behaviors of Carbon Nanotube-Based Polymer Composites under Mixed-Mode I/II Loading

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