Effect of mechanical deformation on electrical percolation of CNT polymer composites

Majid Baniassadi, Akbar Ghazavizadeh, Masoud Safdari, Hamid Garmestani, Said Ahzi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Electrical and mechanical characterization of carbon nanotube (CNT) reinforced composites has long drawn the attention of researchers. Electrical conductivity of CNTs accounts for electrical properties of their composites. Conductivity of insulating polymers is achieved at relatively low volume fractions of CNTs. The lowest volume fraction of CNTs required for conductivity is called percolation threshold. This threshold is affected by the mechanical loading of the composite. In this computer study, the CNT sticks are scattered randomly within a sample block using the algorithm of Monte-Carlo. Subjected to mechanical loading, the sticks are displaced using the method of Mori-Tanaka. Then the diagrams of mechanical strain versus volume fraction at percolation threshold are drawn. The results show that by applying tensile stresses the percolation can be achieved at lower volume fractions compared to the unloaded state.

Original languageEnglish
Title of host publicationProceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages893-897
Number of pages5
EditionPART B
ISBN (Print)9780791843857
DOIs
Publication statusPublished - 1 Jan 2010
EventASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009 - Lake Buena Vista, FL, United States
Duration: 13 Nov 200919 Nov 2009

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings
NumberPART B
Volume12

Other

OtherASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009
CountryUnited States
CityLake Buena Vista, FL
Period13/11/0919/11/09

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ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Baniassadi, M., Ghazavizadeh, A., Safdari, M., Garmestani, H., & Ahzi, S. (2010). Effect of mechanical deformation on electrical percolation of CNT polymer composites. In Proceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009 (PART B ed., pp. 893-897). (ASME International Mechanical Engineering Congress and Exposition, Proceedings; Vol. 12, No. PART B). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2009-12857