Evaluation of Elastic Properties for a Nanocomposite (Reinforced with SWCNT Agglomerates) Utilizing a Representative Volume Element View Full Text


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Article Info

DATE

2019-04

AUTHORS

Salil Kanj Jalan, B. Nageswara Rao, S. V. S. Narayana Murty, S. Gopalakrishnan

ABSTRACT

Single-wall carbon nanotube (SWCNT) has very high measured elastic modulus. But nanocomposites manufactured using SWCNT does not exhibit dramatic increase in the elastic modulus due to various reasons. One of the defects noticed during the manufacturing of nanocomposites is the agglomeration of SWCNT. A novel methodology is proposed in the present paper to model the SWCNT agglomerates. Subsequently, finite element model of representative volume element (RVE) of nanocomposite is generated using validated boundary conditions and the axial elastic modulus is estimated, which is found to be in close agreement with the experimental results. The validated finite element model is used to estimate other elastic properties of nanocomposites, which can avoid costly experiments. Parametric study is carried out to understand the effect of length, diameter of SWCNT agglomerates and chirality of SWCNT on the elastic properties of nanocomposite. Finally, empirical relations are given to estimate all the elastic moduli of RVE if the diameter (hence chirality) of SWCNT and diameter of SWCNT agglomerates are measured after manufacturing nanocomposite with PVA matrix. The methodology described here can be easily extended for the nanocomposite with any other matrix. More... »

PAGES

951-967

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s12666-018-01557-0

DOI

http://dx.doi.org/10.1007/s12666-018-01557-0

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1112216203


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54 schema:description Single-wall carbon nanotube (SWCNT) has very high measured elastic modulus. But nanocomposites manufactured using SWCNT does not exhibit dramatic increase in the elastic modulus due to various reasons. One of the defects noticed during the manufacturing of nanocomposites is the agglomeration of SWCNT. A novel methodology is proposed in the present paper to model the SWCNT agglomerates. Subsequently, finite element model of representative volume element (RVE) of nanocomposite is generated using validated boundary conditions and the axial elastic modulus is estimated, which is found to be in close agreement with the experimental results. The validated finite element model is used to estimate other elastic properties of nanocomposites, which can avoid costly experiments. Parametric study is carried out to understand the effect of length, diameter of SWCNT agglomerates and chirality of SWCNT on the elastic properties of nanocomposite. Finally, empirical relations are given to estimate all the elastic moduli of RVE if the diameter (hence chirality) of SWCNT and diameter of SWCNT agglomerates are measured after manufacturing nanocomposite with PVA matrix. The methodology described here can be easily extended for the nanocomposite with any other matrix.
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