Fracture Behavior of Carbon Nanotube-Based Composites with a Broken Fiber Using Multi-Scale Finite Element Modeling

Kirtania, Sushen; Chakraborty, Debabrata

doi:10.1166/jctn.2014.3411

Cited by 3 publications

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“…Discovery of carbon nanotubes (CNTs) by Iijima in 1991 brought a revolution in research in the field of nanotechnology [1]. CNTs have excellent mechanical, thermal and electrical properties [2]. The combination of excellent properties has made CNTs an ideal candidate for reinforcement in matrix for structural applications.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of elastic properties and mode I fracture energy of carbon nanotube/epoxy and carbon fibre/epoxy laminated composites

Bora

Kirtania

2020

Micro and Nano Syst Lett

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A comparative study of elastic properties and mode I fracture energy has been presented between conventional carbon fibre (CF)/epoxy and advanced carbon nanotube (CNT)/epoxy laminated composite materials. The volume fraction of CNT fibres has been considered as 15%, 30%, and 60% whereas; the volume fraction of CF has been kept constant at 60%. Three stacking sequences of the laminates viz.[0/0/0/0], [0/90/0/90] and [0/30/–30/90] have been considered in the present analysis. Periodic microstructure model has been used to calculate the elastic properties of the laminated composites. It has been observed analytically that the addition of only 15% CNT in epoxy will give almost the same value of longitudinal Young’s modulus as compared to the addition of 60% CF in epoxy. Finite element (FE) analysis of double cantilever beam specimens made from laminated composite has also been performed. It has been observed from FE analysis that the addition of 15% CNT in epoxy will also give almost the same value of mode I fracture energy as compared to the addition of 60% CF in epoxy. The value of mode I fracture energy for [0/0/0/0] laminated composite is two times higher than the other two types of laminated composites.

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Section: Introductionmentioning

confidence: 99%

Comparative study of elastic properties and mode I fracture energy of carbon nanotube/epoxy and carbon fibre/epoxy laminated composites

Bora

Kirtania

2020

Micro and Nano Syst Lett

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“…Faulkner et al 12 experimentally observed a significant improvement of critical energy release rate for mode II due to CNT reinforcement in carbon fiber (CF)/vinylester composite with a pre-existing crack. Recently, Kirtania and Chakraborty 13 studied the stress redistribution in the vicinity of broken fiber and calculated the SERR of a square RVE with single-CNT using finite element (FE) method. However, due to the fact that only a single-CNT RVE was considered, stress redistribution in the adjacent CNT was not studied, which is important from the view point of failure of adjacent intact CNTs.…”

Section: Introductionmentioning

confidence: 99%

“…All these literatures reported that the load-carrying capacity of CNTs in matrix was significant and concluded that the CNT-based composites would be a potential choice to provide extremely strong and ultra lightweight new materials. There have also been few papers 12,13 in the fracture studies of such composites. However, till date there has been no work reported in studying the influence of broken CNT on the adjacent intact CNTs and chances of debonding from such a fiber break in presence of the surrounding matrix and the adjacent intact CNTs.…”

Section: Introductionmentioning

confidence: 99%

Failure analysis of carbon nanotube/epoxy composites having a broken carbon nanotube

Kirtania

Chakraborty

2015

Journal of Reinforced Plastics and Composites

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In the present work, multi-scale finite element analysis of carbon nanotube/epoxy composites having a broken carbon nanotube has been performed to assess the severity of such a fiber (i.e. carbon nanotube) break. A square representative volume element having nine-carbon nanotubes has been considered for the analysis. Considering a small debonding around the broken fiber as a crack front, stress redistribution around the break is studied. Using the concept of linear elastic fracture mechanics, strain energy release rates around the debonding have been calculated using virtual crack closure integral method. Quadratic stress criterion has been used to assess the delamination initiation at the interface of broken carbon nanotube and the matrix. Virtual crack closure integral along with quadratic stress criterion has been used to determine the critical strain energy release rate. Results from the present analysis show that the fiber volume fraction does not have significant influence on the ineffective length of the broken carbon nanotube. A high magnitude of interfacial shear stress is observed to have developed in the vicinity of the fiber break indicating the chances of debonding. All the three components of strain energy release rate have been determined and the influences of important parameters on the value of strain energy release rate have also been studied.

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Enhancement of elastic and fracture properties of carbon nanotube-reinforced aluminum laminated composites

Bora¹,

Kirtania²

2021

MATERIALS, MECHANICS &Amp; MODELING (NCMMM-2020)

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Fracture Behavior of Carbon Nanotube-Based Composites with a Broken Fiber Using Multi-Scale Finite Element Modeling

Cited by 3 publications

References 0 publications

Comparative study of elastic properties and mode I fracture energy of carbon nanotube/epoxy and carbon fibre/epoxy laminated composites

Comparative study of elastic properties and mode I fracture energy of carbon nanotube/epoxy and carbon fibre/epoxy laminated composites

Failure analysis of carbon nanotube/epoxy composites having a broken carbon nanotube

Enhancement of elastic and fracture properties of carbon nanotube-reinforced aluminum laminated composites

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