Wireless Flexible Strain Sensor Based on Carbon Nanotube Piezoresistive Networks for Embedded Measurement of Strain in Concrete

Fulvio Michelis 1 Laurence Bodelot 2 Costel-Sorin Cojocaru 2 Jean-Luc Sorin 1 Yvan Bonnassieux 2 Bérengère Lebental 1
1 IFSTTAR - Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux
2 X - École polytechnique
Abstract : This work proposes a new type of low-cost strain sensor, based on piezoresistive carbon nanotube (CNT) network deposited on a flexible substrate. Experimental results show that the strain can be reliably measured thanks to the highly linear piezoresistive behaviour of the CNT network and thanks to temperature compensation capabilities. Moreover, the experimental results show the capability of measuring multiple loading cycles. The performance and the range of sensitivity of the device, suggest possible usage in the domain of embedded monitoring, in particular the detection of micro-strain and micro-cracking in concrete. In order to target this domain, a wireless RFID solution to embed the sensor into concrete is provided.
Keywords : Wireless and smart sensors Stress & strain Durability
Type de document :
Communication dans un congrès
Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014
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Soumis le : jeudi 10 juillet 2014 - 09:57:22
Dernière modification le : jeudi 7 février 2019 - 15:49:02
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  • HAL Id : hal-01022026, version 1

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Fulvio Michelis, Laurence Bodelot, Costel-Sorin Cojocaru, Jean-Luc Sorin, Yvan Bonnassieux, et al.. Wireless Flexible Strain Sensor Based on Carbon Nanotube Piezoresistive Networks for Embedded Measurement of Strain in Concrete. Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014. 〈hal-01022026〉

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