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International Journal for Multiscale Computational Engineering
Factor de Impacto: 1.016 Factor de Impacto de 5 años: 1.194 SJR: 0.452 SNIP: 0.68 CiteScore™: 1.18

ISSN Imprimir: 1543-1649
ISSN En Línea: 1940-4352

International Journal for Multiscale Computational Engineering

DOI: 10.1615/IntJMultCompEng.2015012650
pages 231-248

MODELING THE HYGRO-THERMO-MECHANICAL AGGLOMERATION RELATIONS OF CARBON-EPOXY HYBRID NANOCOMPOSITES

Chetan Jarali
Structural Technologies Division, CSIR National Aerospace Laboratories, Bangalore-560017, India
Somaraddi R. Basavaraddi
Ph.D Research Centre, Visvesvaraya Technological University, Belgaum-590008, India; Department of Mechanical Engineering, K.L.E College of Engineering and Technology, Udyambagh, Belgaum-590018, India
Sharanabasava C. Pilli
Department of Mechanical Engineering, K.L.E College of Engineering and Technology, Udyambagh, Belgaum-590018, India
S. Raja
Structural Technologies Division, CSIR National Aerospace Laboratories, Bangalore-560017, India
Vilas V. Karjinni
Department of Civil Engineering, Kolhapur Institute of Technology's College Of Engineering, Kolhapur-416 234, India

SINOPSIS

In the present work, the hygro-thermo-mechanical properties of hybrid nanocomposites are presented under the agglomeration effects of carbon nanotubes in the polymer matrix. In order to study the composite behaviors, the Voigt and Reuss homogenization method is adopted to present new relations for a hybrid nanocomposite that contains micro carbon fibers as inclusions along with the nanotubes. The experimental findings have shown that the nanotube agglomerations have a significant impact on the effective thermo-mechanical and moisture properties of nanocomposites. Experimental works also prove that nanotube agglomerations further degrade the electrical and vibration characteristics. Additionally, the existing fabrication methods have shown that extensive deagglomeration process has resulted in considerable damage to the nanotubes. Therefore, in order to overcome the above problems the hybrid nanocomposite concept has been proposed and the effective elastic, thermal, and moisture properties are derived in terms of the nanotube agglomeration. The effective hygro-thermo-mechanical properties of hybrid nanocomposites as a function of nanotube agglomeration volume fraction have been presented. The results prove that the effective properties of nanocomposites are reduced under nanotube agglomerations but enhanced when carbon fibers are used as inclusions. Consequently it is concluded that the nanocomposite properties can be improved by using carbon fibers as hybrid inclusions although nanotube agglomerations may be present.


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