Investigation on sensitivity of a polymer/carbon nanotube composite strain sensor

Ning Hu; Yoshifumi Karube; Masahiro Arai; Tomonori Watanabe; Cheng Yan; Yuan Li; Yaolu Liu; Hisao Fukunaga

doi:10.1016/j.carbon.2009.10.012

Investigation on sensitivity of a polymer/carbon nanotube composite strain sensor

Ning Hu, Yoshifumi Karube, Masahiro Arai, Tomonori Watanabe, Cheng Yan, Yuan Li, Yaolu Liu, Hisao Fukunaga

ENG - Aerospace Engineering

Research output: Contribution to journal › Article

478 Citations (Scopus)

Abstract

Extensive numerical simulation and experimental measurements have been conducted to understand the effects of processing parameters and material properties on sensor sensitivity in polymer/carbon nanotube (CNT) composite sensors. The numerical simulation was based on an improved three-dimensional statistical resistor network model incorporating the tunneling effect between the neighbouring nanotubes, and a fiber reorientation model. The behaviors of a sensor subjected to both tensile and compressive strains were investigated. Both numerical and experimental results indicate that a higher tunneling resistance or higher ratio of the tunneling resistance to the total resistance of the sensor leads to a higher sensor sensitivity. Processing conditions and material properties, such as weight fraction, diameter and conductivity of CNTs, curing temperature, mixing rate and barrier height of polymer matrix all play a role in determining the sensor sensitivity. Crown

Original language	English
Pages (from-to)	680-687
Number of pages	8
Journal	Carbon
Volume	48
Issue number	3
DOIs	https://doi.org/10.1016/j.carbon.2009.10.012
Publication status	Published - 2010 Mar 1

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)

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Hu, N., Karube, Y., Arai, M., Watanabe, T., Yan, C., Li, Y., Liu, Y., & Fukunaga, H. (2010). Investigation on sensitivity of a polymer/carbon nanotube composite strain sensor. Carbon, 48(3), 680-687. https://doi.org/10.1016/j.carbon.2009.10.012

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abstract = "Extensive numerical simulation and experimental measurements have been conducted to understand the effects of processing parameters and material properties on sensor sensitivity in polymer/carbon nanotube (CNT) composite sensors. The numerical simulation was based on an improved three-dimensional statistical resistor network model incorporating the tunneling effect between the neighbouring nanotubes, and a fiber reorientation model. The behaviors of a sensor subjected to both tensile and compressive strains were investigated. Both numerical and experimental results indicate that a higher tunneling resistance or higher ratio of the tunneling resistance to the total resistance of the sensor leads to a higher sensor sensitivity. Processing conditions and material properties, such as weight fraction, diameter and conductivity of CNTs, curing temperature, mixing rate and barrier height of polymer matrix all play a role in determining the sensor sensitivity. Crown",

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AU - Hu, Ning

AU - Karube, Yoshifumi

AU - Arai, Masahiro

AU - Watanabe, Tomonori

AU - Yan, Cheng

AU - Li, Yuan

AU - Liu, Yaolu

AU - Fukunaga, Hisao

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