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An Experimental Study on Static and Dynamic Strain Sensitivity of Embeddable Smart Concrete Sensors Doped with Carbon Nanotubes for SHM of Large Structures

Opened Access An Experimental Study on Static and Dynamic Strain Sensitivity of Embeddable Smart Concrete Sensors Doped with Carbon Nanotubes for SHM of Large Structures

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Autor: Meoni, Andrea
D’Alessandro, Antonella
Downey, Austin
García-Macías, Enrique
Rallini, Marco
Materazzi, A. Luigi
Torre, Luigi
Laflamme, Simon
Castro-Triguero, Rafael
Ubertini, Filippo
Departamento: Universidad de Sevilla. Departamento de Mecánica de Medios Continuos y Teoría de Estructuras
Fecha: 2018
Publicado en: Sensors, 18 (3), 831-.
Tipo de documento: Artículo
Resumen: The availability of new self-sensing cement-based strain sensors allows the development of dense sensor networks for Structural Health Monitoring (SHM) of reinforced concrete structures. These sensors are fabricated by doping cement-matrix mterials with conductive fillers, such as Multi Walled Carbon Nanotubes (MWCNTs), and can be embedded into structural elements made of reinforced concrete prior to casting. The strain sensing principle is based on the multifunctional composites outputting a measurable change in their electrical properties when subjected to a deformation. Previous work by the authors was devoted to material fabrication, modeling and applications in SHM. In this paper, we investigate the behavior of several sensors fabricated with and without aggregates and with different MWCNT contents. The strain sensitivity of the sensors, in terms of fractional change in electrical resistivity for unit strain, as well as their linearity are investigated through experimen...
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Cita: Meoni, A., D’Alessandro, A., Downey, A., García-Macías, E., Rallini, M., Materazzi, A.L.,...,Ubertini, F. (2018). An Experimental Study on Static and Dynamic Strain Sensitivity of Embeddable Smart Concrete Sensors Doped with Carbon Nanotubes for SHM of Large Structures. Sensors, 18 (3), 831-.
Tamaño: 9.818Mb
Formato: PDF

URI: https://hdl.handle.net/11441/71211

DOI: 10.3390/s18030831

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