Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/22610
Título: | Effect of filler dispersion on the electromechanical response of epoxy/vapour grown carbon nanofiber composites |
Autor(es): | Ferreira, A. Cardoso, Paulo Klosterman, D. Covas, J. A. Hattum, F. W. J. van Vaz, F. Lanceros-Méndez, S. |
Palavras-chave: | Polymer-matrix composites Smart materials Electrical properties Piezoresistive |
Data: | 2012 |
Editora: | IOP Publishing |
Revista: | Smart materials and structures |
Resumo(s): | The piezoresistive response of epoxy/vapour grown carbon nanofiber composites prepared by four different dispersion methods achieving different dispersion levels has been investigated. The composite response was measured as a function of carbon nanofiber loading for the different dispersion methods. Strain sensing by variation of the electrical resistance was tested through 4-point bending experiments, and the dependence of the gauge factor as a function of the deformation and velocity of deformation was calculated as well as the stability of the electrical response. The composites demonstrated an appropriate response for being used as a piezoresistive sensor. Specific findings were that the intrinsic piezoresistive response was only effective around the percolation threshold and that good cluster dispersion was more appropriate for a good piezoresistive response than a uniform dispersion of individual nanofibers. The applications limits of these materials for sensors applications are also addressed. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/22610 |
DOI: | 10.1088/0964-1726/21/7/075008 |
ISSN: | 0964-1726 1361-665X |
Versão da editora: | http://iopscience.iop.org/ |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDF - FCD - Artigos/Papers (with refereeing) IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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SMS_II_2012.pdf Acesso restrito! | 1,44 MB | Adobe PDF | Ver/Abrir |