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The role of irreversible and reversible phenomena in the piezoresistive behavior of graphene epoxy nanocomposites applied to structural health monitoring

Chiacchiarelli, Leonel M. ; Rallini, Marco ; Monti, Marco ; Puglia, Debora ; Kenny, Jose M. ; Torre, L.

Composites science and technology, 2013-05, Vol.80, p.73-79 [Periódico revisado por pares]

Kidlington: Elsevier Ltd

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Título:
The role of irreversible and reversible phenomena in the piezoresistive behavior of graphene epoxy nanocomposites applied to structural health monitoring
Autor: Chiacchiarelli, Leonel M. ; Rallini, Marco ; Monti, Marco ; Puglia, Debora ; Kenny, Jose M. ; Torre, L.
Assuntos: A. Nano composites ; A. Polymer-matrix properties ; Applied sciences ; B. Electrical Properties ; C. Modelling ; Exact sciences and technology ; Forms of application and semi-finished materials ; Laminates ; Polymer industry, paints, wood ; Technology of polymers
É parte de: Composites science and technology, 2013-05, Vol.80, p.73-79
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: The use of graphene for the development of a strain and damage sensor was evaluated and modeled. To achieve this, a graphene epoxy reactive mixture was used as a conductive coating which was cured onto a carbon fiber reinforced composite. This methodology proved to be very effective where substantial changes in piezoresistivity (up to 400%) were found as a function of strain (up to 2%). This contributed to a very high linear gauge factor (56.7±0.69). The role of reversible and irreversible phenomena in the sensor piezoresistivity was modeled using the concepts of tunneling currents and conduction paths. In order to predict the response at higher deformation, an irreversible component was introduced to account for the substantial increase of piezoresistivity. A model which incorporated both components was able to predict the piezoresistivity up to high deformation.
Editor: Kidlington: Elsevier Ltd
Idioma: Inglês

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The role of irreversible and reversible phenomena in the piezoresistive behavior of graphene epoxy nanocomposites applied to structural health monitoring

Chiacchiarelli, Leonel M. ; Rallini, Marco ; Monti, Marco ; Puglia, Debora ; Kenny, Jose M. ; Torre, L.

Kidlington: Elsevier Ltd

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