Record Details

Mechanical Characterization of Carbon Nanotubes and Nanocomposites

Electronic Theses of Indian Institute of Science

View Archive Info
 
 
Field Value
 
Title Mechanical Characterization of Carbon Nanotubes and Nanocomposites
 
Creator Jalan, Salil Kanj
 
Subject Carbon Nanotubes
Carbon Allotrope
Nanocomposite
SWCNT
MWCNT
CNT
Single Wall Carbon Nanotube
Double Wall Polychiral Carbon Nanotubes
Zigzag
Aerospace Engineering
 
Description Measurement of all the mechanical properties of carbon nanotubes is extremely difficult because of its small size. In the present work, all the five transverse isotropic properties of single wall carbon nanotubes (SWCNTs) and double wall carbon nanotubes are estimated through molecular structural mechanics for different chirality, length and assumed thickness. Armchair, zigzag & chiral SWCNTs and polychiral DWCNTs are considered for the analysis. Longitudinal and lateral Young’s modulus; longitudinal and lateral Poisson’s ratio and shear modulus are estimated for 1080 SWCNTs and 1170 polychiral DWCNTs. Effect of temperature on all the properties of SWCNT are investigated. Modal characterization of SWCNT is carried out in base fixed condition and different mode shapes viz. axial, torsion and bending mode shapes are identified based on the effective mass. Once the transverse isotropic properties of SWCNTs are estimated, these are used to estimate the transverse isotropic properties of nanocomposites embedded with SWCNT agglomerates. During the manufacturing of nanocomposite, SWCNT agglomerates are formed due to sticking of number of SWCNTs. Parametric studies are carried out to see the effect of SWCNT length on the properties of nanocomposite. Empirical formulae for all the transverse isotropic properties of SWCNT at room temperature and elevated temperature; frequency of SWCNT are derived. Empirical formulae for polychiral DWCNT transverse isotropic properties are estimated. Input for these empirical formulae are the length, chirality and assumed thickness. Empirical formulae were also derived for nanocomposite embedded with different number of SWCNTs having different chirality. The derived empirical formulae were validated with available analytical and experimental results for some sample cases.
 
Contributor Gopalakrishnan, S
 
Date 2018-08-14T06:49:38Z
2018-08-14T06:49:38Z
2018-08-14
2015
 
Type Thesis
 
Identifier http://etd.iisc.ernet.in/2005/3968
http://etd.iisc.ernet.in/abstracts/4855/G27273-Abs.pdf
 
Language en_US
 
Relation G27273