Electromechanical properties of carbon-nanostructured elastomeric composites measured by digital image correlation

Tensile mechanical and piezoresistive properties of elastomeric (thermoplastic polyurethane) nanocomposites in film form, made of multiwall carbon nanotubes, multilayer graphene sheets and hybrid combinations of both are investigated using digital image correlation (DIC) for strain measurement. For...

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Main Authors: C. Pérez-Aranda, F. Avilés
Format: Article
Language:English
Published: Elsevier 2021-07-01
Series:Composites Part C: Open Access
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2666682021000566
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author C. Pérez-Aranda
F. Avilés
author_facet C. Pérez-Aranda
F. Avilés
author_sort C. Pérez-Aranda
collection DOAJ
description Tensile mechanical and piezoresistive properties of elastomeric (thermoplastic polyurethane) nanocomposites in film form, made of multiwall carbon nanotubes, multilayer graphene sheets and hybrid combinations of both are investigated using digital image correlation (DIC) for strain measurement. For the hybrid materials, the mechanical and piezoresistive responses are dominated by the carbon nanotube network. Comparison between strain measurement conducted using DIC and the crosshead displacement (CHD) of the universal testing machine, indicate that the error in the piezoresistive gage factor (sensitivity) incurred by the use of CHD is proportional to that of the elastic modulus, and it can be as large as 40% for these films. This error incurred when using CHD, could be largely suppressed by proper calibration of the length of the gage section of the tensile coupons, and such a calibration can be conducted based on the average strain fields and elastic modulus measured by DIC.
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spelling doaj.art-1b7b81fb68ec4252abdd9c1afae8a1a62022-12-21T22:06:51ZengElsevierComposites Part C: Open Access2666-68202021-07-015100161Electromechanical properties of carbon-nanostructured elastomeric composites measured by digital image correlationC. Pérez-Aranda0F. Avilés1Centro de Investigación Científica de Yucatán, A.C., Unidad de Materiales, Calle 43 No.130 32 y 34, Col. Chuburná de Hidalgo, 97205, Mérida, Yucatán, MexicoCorresponding author.; Centro de Investigación Científica de Yucatán, A.C., Unidad de Materiales, Calle 43 No.130 32 y 34, Col. Chuburná de Hidalgo, 97205, Mérida, Yucatán, MexicoTensile mechanical and piezoresistive properties of elastomeric (thermoplastic polyurethane) nanocomposites in film form, made of multiwall carbon nanotubes, multilayer graphene sheets and hybrid combinations of both are investigated using digital image correlation (DIC) for strain measurement. For the hybrid materials, the mechanical and piezoresistive responses are dominated by the carbon nanotube network. Comparison between strain measurement conducted using DIC and the crosshead displacement (CHD) of the universal testing machine, indicate that the error in the piezoresistive gage factor (sensitivity) incurred by the use of CHD is proportional to that of the elastic modulus, and it can be as large as 40% for these films. This error incurred when using CHD, could be largely suppressed by proper calibration of the length of the gage section of the tensile coupons, and such a calibration can be conducted based on the average strain fields and elastic modulus measured by DIC.http://www.sciencedirect.com/science/article/pii/S2666682021000566GrapheneCarbon nanotubesHybrid compositesMultifunctional compositesElectro-mechanicalDigital image correlation
spellingShingle C. Pérez-Aranda
F. Avilés
Electromechanical properties of carbon-nanostructured elastomeric composites measured by digital image correlation
Composites Part C: Open Access
Graphene
Carbon nanotubes
Hybrid composites
Multifunctional composites
Electro-mechanical
Digital image correlation
title Electromechanical properties of carbon-nanostructured elastomeric composites measured by digital image correlation
title_full Electromechanical properties of carbon-nanostructured elastomeric composites measured by digital image correlation
title_fullStr Electromechanical properties of carbon-nanostructured elastomeric composites measured by digital image correlation
title_full_unstemmed Electromechanical properties of carbon-nanostructured elastomeric composites measured by digital image correlation
title_short Electromechanical properties of carbon-nanostructured elastomeric composites measured by digital image correlation
title_sort electromechanical properties of carbon nanostructured elastomeric composites measured by digital image correlation
topic Graphene
Carbon nanotubes
Hybrid composites
Multifunctional composites
Electro-mechanical
Digital image correlation
url http://www.sciencedirect.com/science/article/pii/S2666682021000566
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