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Sensors 2016, 16(8), 1171; doi:10.3390/s16081171

A Spray-On Carbon Nanotube Artificial Neuron Strain Sensor for Composite Structural Health Monitoring

1
Manufacturing Automation R & BD Group, Korea Institute of Industrial Technology, Chonan 143-701, Korea
2
Department of Architectural Engineering, Namseoul University, Cheonan 331-707, Korea
3
Department of Medical Device, Korea Institute of Machinery & Materials, Daegu 711-880, Korea
4
Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, Korea
5
School of Mechanical Engineering, Sungkyunkwan University, Suwon 440-746, Korea
6
Smart Structures and Bio-Nanotechnology Laboratory, University of Cincinnati, Cincinnati, OH 45221, USA
7
Graduate School of Pukyong National University, Busan 608-739, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Jandro L. Abot
Received: 25 February 2016 / Revised: 21 July 2016 / Accepted: 22 July 2016 / Published: 26 July 2016
(This article belongs to the Special Issue Integrated Structural Health Monitoring in Polymeric Composites)
View Full-Text   |   Download PDF [5376 KB, uploaded 26 July 2016]   |  

Abstract

We present a nanocomposite strain sensor (NCSS) to develop a novel structural health monitoring (SHM) sensor that can be easily installed in a composite structure. An NCSS made of a multi-walled carbon nanotubes (MWCNT)/epoxy composite was installed on a target structure with facile processing. We attempted to evaluate the NCSS sensing characteristics and benchmark compared to those of a conventional foil strain gauge. The response of the NCSS was fairly good and the result was nearly identical to the strain gauge. A neuron, which is a biomimetic long continuous NCSS, was also developed, and its vibration response was investigated for structural damage detection of a composite cantilever. The vibration response for damage detection was measured by tracking the first natural frequency, which demonstrated good result that matched the finite element (FE) analysis. View Full-Text
Keywords: carbon nanotube; artificial neuron; strain sensor; composites; structural health monitoring; piezoresistivity; damage detection carbon nanotube; artificial neuron; strain sensor; composites; structural health monitoring; piezoresistivity; damage detection
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Choi, G.; Lee, J.W.; Cha, J.Y.; Kim, Y.-J.; Choi, Y.-S.; Schulz, M.J.; Moon, C.K.; Lim, K.T.; Kim, S.Y.; Kang, I. A Spray-On Carbon Nanotube Artificial Neuron Strain Sensor for Composite Structural Health Monitoring. Sensors 2016, 16, 1171.

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