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Title
Characterization of the spatial elastoresistivity of inkjet-printed carbon nanotube thin films
AuthorZhao, Yingjun ; Gschossmann, Sandra ; Schagerl, Martin ; Grüner, Patrick ; Kralovec, Christoph
Published in
Smart Materials and Structures, 2018, Vol. 27, Issue 10
PublishedIOP Publishing, 2018
LanguageEnglish
Document typeJournal Article
ISSN1361-665X
URNurn:nbn:at:at-ubl:3-968 Persistent Identifier (URN)
DOI10.1088/1361-665X/aad8f1 
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 The work is publicly available
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Characterization of the spatial elastoresistivity of inkjet-printed carbon nanotube thin films [1.53 mb]
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Abstract (English)

Next-generation lightweight-designed structures shall be able to perform self-state assessment via integrated health monitoring systems. In this article a carbon nanotube-embedded polymeric thin film is applied via inkjet-printing to perform spatial strain sensing in conjunction with using electrical impedance tomography. To gain an advanced understanding of the thin film's spatial strain sensitivity, the elastoresistivity matrix, a fourth-order tensor correlating the strain state of a conductor into its normalized change in resistivity state, is characterized. The Montgomery method is adopted to derive the planar resistivity coefficients of the thin film, and a digital image correlation system is used to measure the planar strains. A validation test suggests that the calculated determinant of the correlated change in anisotropic resistivity shows a fairly similar result to the measured isotropic EIT reconstruction results.

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CC-BY-License (4.0)Creative Commons Attribution 4.0 International License