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Using carbon nanofibre sensors for in-situ detection and monitoring of disbonds in bonded composite joints

Ladani, Raj B., Wu, Shuying, Zhang, Jin, Ghorbani, Kamran, Kinloch, Anthony J., Mouritz, Adrian P. and Wang, Chun H. 2017, Using carbon nanofibre sensors for in-situ detection and monitoring of disbonds in bonded composite joints, Procedia engineering, vol. 188, pp. 362-368, doi: 10.1016/j.proeng.2017.04.496.

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Title Using carbon nanofibre sensors for in-situ detection and monitoring of disbonds in bonded composite joints
Author(s) Ladani, Raj B.
Wu, Shuying
Zhang, JinORCID iD for Zhang, Jin orcid.org/0000-0001-5282-4835
Ghorbani, Kamran
Kinloch, Anthony J.
Mouritz, Adrian P.
Wang, Chun H.
Journal name Procedia engineering
Volume number 188
Start page 362
End page 368
Total pages 7
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2017
ISSN 1877-7058
Keyword(s) carbon nanofibre
adhesive
nanocomposite
damage detection
structural health monitoring
Summary This paper focuses on the ability of carbon nanofibre (CNF) networks to in situ monitor fatigue induced disbond damage in adhesive bonded composite joints. The inclusion of CNFs in the epoxy adhesive increases its conductivity by five orders of magnitude. The improved electrical conductivity is utilized to evaluate the ability of the CNF network to monitor and detect the fatigue induced disbond damage by measuring the in-situ resistance changes using a four probe setup. The changes in total resistance was a function of the bulk electrical resistivity of the adhesive and the bond dimensions, which were related to the disbond length to model and determine the size of the disbond. The simple resistivity model was in good agreement with the resistance measured during fatigue testing. Good agreement was found between the optical disbond observations and the disbond length calculated using the proposed model. Finite element simulations were performed to ascertain the range of applicability of the proposed model. The simplicity of the disbond detection technique via direct current potential drop technique enables real time monitoring of crack growth in the composite structure.
Notes Part of the 6th Asia Pacific Worshop on Structural Health Monitoring, Hobart, Tasmania, 7-9 Dec 2016.
Language eng
DOI 10.1016/j.proeng.2017.04.496
Field of Research 091202 Composite and Hybrid Materials
MD Multidisciplinary
Socio Economic Objective 861301 Aerospace Equipment
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2016, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution Non-Commercial No-Derivatives licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30096999

Document type: Journal Article
Collections: Institute for Frontier Materials
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.