Novel corrosion sensor based on carbon nanotube composites for structural health monitoring

Tan, Andy, Yong Cha, Joo Joo, & Kang, Inpil (2011) Novel corrosion sensor based on carbon nanotube composites for structural health monitoring. In Bayazitoglu, Yildiz (Ed.) Proceedings of the Thermal and Materials Nanoscience and Nanotechnology for Structural Health Monitoring, Begell House, Hotel Dedeman, Antalya, Turkey , pp. 1-7.

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Bridges are important infrastructures of all nations and are required for transportation of goods as well as human. A catastrophic failure can result in loss of lives and enormous financial hardship to the nation. Hence, there is an urgent need to monitor our infrastructures to prolong their life span, at the same time catering for heavier and faster moving traffics. Although various kinds of sensors are now available to monitor the health of the structures due to corrosion, they do not provide permanent and long term measurements. This paper investigates the fabrication of Carbon Nanotube (CNT) based composite sensors for structural health monitoring. The CNTs, a key material in nanotechnology has aroused great interest in the research community due to their remarkable mechanical, electrochemical, piezoresistive and other physical properties. Multi-wall CNT (MWCNT)/Nafion composite sensors were fabricated to evaluate their electrical properties when subjected to chemical solutions, to simulate a chemical reaction due to corrosion and real life corrosion experimental tests. The electrical resistance of the sensor electrode was dramatically changed due to corrosion. The novel sensor is expected to effectively detect corrosion in structures based on the measurement of electrical impedances of the CNT composite.

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ID Code: 46098
Item Type: Conference Paper
Refereed: Yes
Keywords: Nanotechnology, Carbon Nanotube, Sensors, Condition Monitoring, Asset Management
ISBN: 9781567002713
Subjects: Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700) > Nanoelectromechanical Systems (100704)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2011 TMNN
Deposited On: 17 Oct 2011 00:09
Last Modified: 17 Oct 2011 20:28

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