Structural health monitoring of nonwoven materials via self-similar arrays of carbon nanotubes
Unleashing the potential of self-similar materials could prove as serious contenders for next-generation sensors. Herein, a systematic approach to design and develop self-similar nonwoven interfacially aided with multi-walled carbon nanotubes (SS–NI-MWCNTs) via a facile, scalable, and cost-effective...
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Published in: | Composites communications Vol. 32; p. 101155 |
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Main Authors: | , , , , , , , |
Format: | Journal Article |
Language: | English |
Published: |
Elsevier Ltd
01-06-2022
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Subjects: | |
Online Access: | Get full text |
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Summary: | Unleashing the potential of self-similar materials could prove as serious contenders for next-generation sensors. Herein, a systematic approach to design and develop self-similar nonwoven interfacially aided with multi-walled carbon nanotubes (SS–NI-MWCNTs) via a facile, scalable, and cost-effective vacuum filtration process has been proposed. A simple deformation mechanism of SS-NI-MWCNTs giving rise to the piezoresistive behaviour has been correlated with the tensile mechanics universal to both nonwovens and random arrays of MWCNTs. The failure of the SS-NI-MWCNTs is preponderantly governed through inter-tube/fibre sliding that originates from self-similar serpentine characteristics of random arrays of CNTs and glass fibre-based nonwoven materials, triggering their piezoresistive nature. The merits and limits of the sensing ability of esoteric SS-NI-MWCNTs have been demystified by artificially inducing various types of defects in the form of notches. The measured gauge factors of pristine and notched SS-NI-MWCNTs are found to be in the range of 18–30 at a 1% strain level.
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•Designed and developed SS-NI-MWCNTs via vacuum filtration process.•Monitored the damage characteristics of glass fibre nonwovens by piezoresistive behaviour of MWCNTs.•Deformation mechanism of SS-NI-MWCNTs correlated with the piezoresistive behaviour.•Analysed the sensing ability of SS-NI-MWCNTs by inducing various types of defects. |
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ISSN: | 2452-2139 2452-2139 |
DOI: | 10.1016/j.coco.2022.101155 |