Structural health monitoring capabilities in ceramic – carbon nanocomposites

Article


Inam, F., Bhat, B. R., Vo, T. and Daoush, W. M. 2013. Structural health monitoring capabilities in ceramic – carbon nanocomposites. Ceramics International. 40 (2), pp. 3793-3798. https://doi.org/10.1016/j.ceramint.2013.09.039
AuthorsInam, F., Bhat, B. R., Vo, T. and Daoush, W. M.
Abstract

A novel method for analysing structural health of alumina nanocomposites filled with graphene nanoplatelets (GNP), carbon nanotubes (CNTs) and carbon black nano-particles (CB) is presented. All nanocomposites were prepared using novel colloidal processing and then by Spark Plasma Sintering. Good homogeneous dispersion was observed for all carbon filled materials. Nanocomposite bars were indented to produce sub-surface damage. Change in electrical conductivities were analysed after indentation to understand structural damage. For correlating change in electrical conductivity and indentation damage and understanding damage tolerance, mechanical properties were compared. Because of the systematically induced indentation damage, a sharp decrease of 86% was observed in the electrical conductivity of CNT nanocomposite as compared to 69% and 27% in the electrical conductivities of GNP nanocomposites and CB nanocomposites respectively. CNTs impart superior damage sensing capability in alumina nanocomposites, in comparison to GNP and CB, due to their fibrous nature, high aspect ratio and high electrical conductivity.

JournalCeramics International
Journal citation40 (2), pp. 3793-3798
ISSN0272-8842
Year2013
PublisherElsevier
Accepted author manuscript
License
File Access Level
Anyone
Digital Object Identifier (DOI)https://doi.org/10.1016/j.ceramint.2013.09.039
Web address (URL)https://doi.org/10.1016/j.ceramint.2013.09.039
Publication dates
Online16 Sep 2013
Publication process dates
Deposited28 Apr 2020
Copyright holder© 2013 Elsevier
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Accepted author manuscript
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License: CC BY-NC-ND 4.0
File access level: Anyone

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