Fabrication and electromechanical performance of carbon nanotube based conductive membrane and its application in real-time multimode strain detection in composites

Qureshi, Yumna, Tarfaoui, Mostapha and Lafdi, Khalid (2021) Fabrication and electromechanical performance of carbon nanotube based conductive membrane and its application in real-time multimode strain detection in composites. Materials Science and Engineering: B, 268. p. 115120. ISSN 0921-5107

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Official URL: https://doi.org/10.1016/j.mseb.2021.115120

Abstract

In this study, a flexible conductive membrane (CM) consisting of a network of carbon nanotubes is produced and the electromechanical behavior of this CM was studied experimentally and the gauge factor (GF) of CM was in the 8–8.25 range. Then, a multi-mode strain detection is carried out in composites using this CM sensor. The CM is embedded gradually at directions i.e. 0°, +45°, 90°, −45° between the plies for real-time/in-situ strain monitoring. The composite specimens are then cut in star profile and then tested under tensile and bending cyclic loading. There is a good reproducibility in the results and the mechanical response of composite correlated perfectly with the electrical resistance of the CM sensor however, a sensor in each position showed distinct behavior. The results established that the CM sensor exhibited good potential as a flexible strain sensor for in-situ monitoring of composites and can provide detection over a large section and unapproachable locations.

Item Type: Article
Uncontrolled Keywords: Carbon nanotubes, Conductive membrane, Electromechanical performance, Composites, Real-time strain monitoring, Multi-mode detection
Subjects: F200 Materials Science
H300 Mechanical Engineering
H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Elena Carlaw
Date Deposited: 15 Mar 2021 12:28
Last Modified: 15 Mar 2021 12:30
URI: http://nrl.northumbria.ac.uk/id/eprint/45695

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