Please use this identifier to cite or link to this item: http://cicy.repositorioinstitucional.mx/jspui/handle/1003/735
Predicting the piezoresistance contribution of carbon nanotubes in a polymer matrix through finite element modeling
ANDRES IVAN OLIVA AVILES
VICTOR JOSE SOSA VILLANUEVA
FRANCIS AVILES CETINA
Acceso Abierto
Atribución-NoComercial-SinDerivadas
CARBON NANOTUBES
FINITE ELEMENT
PIEZORESISTIVITY
POLYMER COMPOSITES
The change in electrical resistance due to mechanical deformation of carbon nanotube (CNT)/polymer composites can be rationalized in terms of two main effects: i) changes in the composite electrical resistivity due to changes in the CNT network configuration, and ii) deformation of the CNTs themselves. The contribution of CNT dimensional changes (ii) to the piezoresistivity of CNT/polymer composites is investigated here. A model based on a representative volume element which describes the CNT geometrical contribution to the composite electromechanical response (piezoresistivity) in terms of the CNT and matrix deformations is proposed. Finite element analysis is performed to correlate the macroscale composite strain to the individual CNT strain. The CNT geometric contribution to the piezoresistivity of the composite is quantified for a range of matrix elastic modulus and different CNT orientations. Based on the model predictions and previous experimental results, it is estimated that the contribution of the CNT deformation to the composite piezoresistivity is only about 5%, indicating that the dominant effect in the piezoresistivity of CNT/polymer composites is the change in the CNT network configuration.
2013-11
Artículo
Revista Mexicana De Fisica, 59(6), 511-516, 2013
Inglés
Oliva-Avilés, A. I., Sosa, V., & Avilés, F. (2013). Predicting the piezoresistance contribution of carbon nanotubes in a polymer matrix through finite element modeling. Revista Mexicana De Fisica, 59(6), 511-516.
INGENIERÍA Y TECNOLOGÍA
Versión publicada
publishedVersion - Versión publicada
Appears in Collections:Artículos de Investigación Arbitrados

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