RESEARCH ARTICLE


Multifunctional Carbon Nanotube Film Composite for Structure Health Monitoring and Damping



X. Li*, C. Levy, A. Agarwal, A. Datye, L. Elaadil, A. K. Keshri , M. Li
Department of Mechanical and Materials Engineering, Florida International University, Miami, FL 33199, USA.


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Creative Commons License
© Li et al.;

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the Department of Mechanical and Materials Engineering, Florida International University, Miami, FL 33199, USA. Tel: +1 (305) 348-3643; Fax: +1 (305) 348-1932; E-mail: levyez@fiu.edu


Abstract

The goal of this work is to develop and investigate the properties of a new type of multifunctional composite which is based on multi-walled carbon nanotubes (MWCNT). The composite was prepared from a MWCNT bucky paper film which was sandwiched between two adhesive layers. Both two point probe and four point probe methods were used to test its mechanical strain sensing properties. The Young modulus and shear modulus of MWCNT film composite were acquired by the nanoindentation test and direct shear test. A free vibration test was also performed to investigate its structural damping properties. Our research indicated that this new type of carbon nanotube based composite is potentially capable of functioning as a strain sensor and damping device simultaneously for structural vibration control.

Keywords: Multifunctional, carbon nanotube, strain sensor.