Assessment of interface damage during the deformation of carbon nanotube composites

Kao, Chih-Chuan; Young, Robert J.

doi:10.1007/s10853-009-3947-0

Cited by 28 publications

(17 citation statements)

References 22 publications

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“…Considerable work has been undertaken using Raman spectroscopy to investigate the deformation of SWNTs in SWNT/ polymer composites to probe degradation of the interface between the polymers and nanotubes [14], to measure the interfacial shear strength of the SWNT-matrix interface [6] and to map the strain fields around fibres in a glass fibrereinforced polymer composite [15,16]. This has been undertaken by following the deformation of the nanotubes using the shifts of the D-, G-, G 0 -Raman band frequencies.…”

Section: Swnt/epoxy Nanocompositesmentioning

confidence: 99%

“…Recently, researchers have shown interest in following stress transfer from the positions of the stress-sensitive G 0 (or 2D), G and D bands as well as the intensities of the radial breathing modes (RBM) bands [4,5] to follow the deformation of SWNT bundles (and detect interface damage) [6], DWNTs [7], MWNTs in epoxy nanocomposites [3], and CNT fibres [8]. Applying external strains that modify the electronic structure of CNTs in epoxy nanocomposites causes shifts in their Raman peak positions (G, D and G 0 ) as well as the linewidths and the intensities of the RBMs.…”

Section: Introductionmentioning

confidence: 99%

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Interfacial and internal stress transfer in carbon nanotube based nanocomposites

et al. 2015

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This study is concerned with structure-property relationships in different types of carbon nanotubes (CNTs), in particular investigating both interfacial and internal stress transfer for CNTs in nanocomposites. The shift of position and width of the G 0 -Raman band for single-walled CNTs (SWNTs) and multi-walled CNTs (MWNTs) in an epoxy matrix were used to monitor stress transfer between the nanotubes and an epoxy matrix in nanocomposites. It was found that the rate of band shift per unit strain was higher for the SWNTs than the MWNTs and that the G 0 band tended to undergo broadening with strain for the SWNTs and narrowing with strain for the MWNTs. A theory has been developed to simulate this behaviour in terms of stress transfer between the different layers within the MWNTs. It has also enabled the determination of the stress transfer efficiency parameter, (k i ) for the MWNTs. It is demonstrated that MWNTs give inferior reinforcement to SWNTs as a result of slippage between the walls giving rise to poor internal stress transfer in the MWNTs. This phenomenon will lead to the MWNTs having a lower effective Young's modulus in nanocomposites than SWNTs.

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Section: Swnt/epoxy Nanocompositesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interfacial and internal stress transfer in carbon nanotube based nanocomposites

et al. 2015

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“…However, pullout experiments conducted by Ganesan et al [16] for larger embedment lengths showed the existence of some frictional interaction between the CNT and the matrix after the failure of the CNT-matrix interface. The hypothesis of frictional CNT-polymer interaction is further corroborated by experiments conducted by Kao and Young [11,10], which proved the existence of a hysteresis loop for a single-walled CNT (SWCNT)-reinforced polymer under a cyclic load. Li et al [30] and Wernik et al [23] simulated the pullout of pristine MWCNTs from a polymer matrix using a van der Waals potential to describe the CNT-matrix interaction.…”

Section: Introductionmentioning

confidence: 60%

The impact of interfacial properties on the macroscopic performance of carbon nanotube composites. A FE 2 -based multiscale study

Papadopoulos

Tavlaki

2016

Composite Structures

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“…Multi-wall CNTs (MWCNTs), having typically higher tube diameter than single-wall CNTs (SWCNTs), are in principle easier to disperse in a polymer matrix. Several similar works in literature have studied the elasticity [4,5], damage [6], buckling [7,8], tribology [9,10] and toughness [11] of CNT-filler polymer (mainly) composites.…”

Section: Introductionmentioning

confidence: 99%

Lubricity Assessment, Wear and Friction of CNT-Based Structures in Nanoscale

Koumoulos

Charitidis

2017

Lubricants

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Abstract:In this work, three case studies are reported, namely carbon nanotube/polyvinyl butyral composites, MWCNTs/polydimethylsiloxane-based coatings and vertically aligned CNT forest array, of which the friction and resistance to wear/deformation were assessed through nanoindentation/nanoscratch. Additional deformation parameters and findings are also addressed and discussed; namely, material deformation upwards (pile-up) or downwards (sink-in) with respect to the indented surface plane, hardness to modulus ratio (index of resistance to wear) and coefficient of friction. The enhancement of the scratch resistance due to the incorporation of CNTs in a polymer matrix is investigated. For the case of the forest structure, sliding between neighboring nanotubes is identified, while, through ploughing of the tip, local deformation and the extent of plasticity are also addressed.

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Assessment of interface damage during the deformation of carbon nanotube composites

Cited by 28 publications

References 22 publications

Interfacial and internal stress transfer in carbon nanotube based nanocomposites

Interfacial and internal stress transfer in carbon nanotube based nanocomposites

The impact of interfacial properties on the macroscopic performance of carbon nanotube composites. A FE 2 -based multiscale study

Lubricity Assessment, Wear and Friction of CNT-Based Structures in Nanoscale

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