Structural health monitoring capabilities in ceramic–carbon nanocomposites

Abstract

This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractA 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 Page 2 of 15 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.

A Comprehensive Review of Graphene Nanocomposites: Research Status and Trends

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Structural health monitoring of offshore wind turbines: A review through the Statistical Pattern Recognition Paradigm

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“…30 a Fractured microstructure of alumina/carbon nanocomposites obtained from SEM. b Change in electrical conductivity of alumina/carbon nanocomposites due to Vickers indentation (Reproduced from (Inam et al 2014), with the permission from Elsevier) Appl Nanosci (2017) 7:519-548 541 results of the segregation of soft WS 2 in the material. Due to the multiphase material composition, the entire range of hardness lies in between the hardness of WC having 24-28 GPa and WS 2 having 3 GPa (Bhushan and Gupta 1991).…”

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