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Effects of the carbon nanotube distribution on the macroscopic stiffness of composite materials

Having extremely high stiffness and low specific weight, carbon nanotubes (CNTs) have been known recently as perfect reinforcing fibers in nanotechnology. They can improve the stiffness and strength of nanocomposites by being used as reinforcing elements for example in polymer matrices. The correspo...

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Main Authors: Afrooz I., Eslami, Öchsner, Andreas, Rahmandoust, Moones
Format: Article
Published: Elsevier Ltd. 2012
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.utm.my/id/eprint/46902/
http://dx.doi.org/10.1016/j.commatsci.2011.08.003
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spelling my.utm.469022019-03-31T08:31:31Z http://eprints.utm.my/id/eprint/46902/ Effects of the carbon nanotube distribution on the macroscopic stiffness of composite materials Afrooz I., Eslami Öchsner, Andreas Rahmandoust, Moones TA Engineering (General). Civil engineering (General) Having extremely high stiffness and low specific weight, carbon nanotubes (CNTs) have been known recently as perfect reinforcing fibers in nanotechnology. They can improve the stiffness and strength of nanocomposites by being used as reinforcing elements for example in polymer matrices. The corresponding properties of the fibers and matrix, such as volume fraction and aspect ratio are some of the significant factors in the characterization of mechanical properties of CNT reinforced composites. In recent years, the way in which fibers are distributed inside the matrix, in terms of randomness, has introduced another important factor in characterizing the mechanical properties of such composites. Based on this factor, composites can be classified into two types namely, aligned and randomly distributed. This research has studied the effect of random distribution of fibers in the matrix on the elastic modulus and initial yield stress of the nanocomposite. Therefore, several models of composites, with different distribution of fibers, were considered while holding the volume fractions and aspect ratio constant. As a result, the effect of randomness on the effective modulus of CNT reinforced composites was estimated. The finite element method (FEM), using the MSC.Marc software, was employed to predict the effective modulus of CNT reinforced composites and the results were successfully validated by comparison with the analytical Halpin–Tsai method. Elsevier Ltd. 2012 Article PeerReviewed Afrooz I., Eslami and Öchsner, Andreas and Rahmandoust, Moones (2012) Effects of the carbon nanotube distribution on the macroscopic stiffness of composite materials. Computational Materials Science, 51 (1). pp. 422-429. ISSN 0927-0256 http://dx.doi.org/10.1016/j.commatsci.2011.08.003 DOI:10.1016/j.commatsci.2011.08.003
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Afrooz I., Eslami
Öchsner, Andreas
Rahmandoust, Moones
Effects of the carbon nanotube distribution on the macroscopic stiffness of composite materials
description Having extremely high stiffness and low specific weight, carbon nanotubes (CNTs) have been known recently as perfect reinforcing fibers in nanotechnology. They can improve the stiffness and strength of nanocomposites by being used as reinforcing elements for example in polymer matrices. The corresponding properties of the fibers and matrix, such as volume fraction and aspect ratio are some of the significant factors in the characterization of mechanical properties of CNT reinforced composites. In recent years, the way in which fibers are distributed inside the matrix, in terms of randomness, has introduced another important factor in characterizing the mechanical properties of such composites. Based on this factor, composites can be classified into two types namely, aligned and randomly distributed. This research has studied the effect of random distribution of fibers in the matrix on the elastic modulus and initial yield stress of the nanocomposite. Therefore, several models of composites, with different distribution of fibers, were considered while holding the volume fractions and aspect ratio constant. As a result, the effect of randomness on the effective modulus of CNT reinforced composites was estimated. The finite element method (FEM), using the MSC.Marc software, was employed to predict the effective modulus of CNT reinforced composites and the results were successfully validated by comparison with the analytical Halpin–Tsai method.
format Article
author Afrooz I., Eslami
Öchsner, Andreas
Rahmandoust, Moones
author_facet Afrooz I., Eslami
Öchsner, Andreas
Rahmandoust, Moones
author_sort Afrooz I., Eslami
title Effects of the carbon nanotube distribution on the macroscopic stiffness of composite materials
title_short Effects of the carbon nanotube distribution on the macroscopic stiffness of composite materials
title_full Effects of the carbon nanotube distribution on the macroscopic stiffness of composite materials
title_fullStr Effects of the carbon nanotube distribution on the macroscopic stiffness of composite materials
title_full_unstemmed Effects of the carbon nanotube distribution on the macroscopic stiffness of composite materials
title_sort effects of the carbon nanotube distribution on the macroscopic stiffness of composite materials
publisher Elsevier Ltd.
publishDate 2012
url http://eprints.utm.my/id/eprint/46902/
http://dx.doi.org/10.1016/j.commatsci.2011.08.003
_version_ 1643652174764310528
score 13.211869

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