TY - GEN
T1 - Electrically conductive nanocomposite coating for strain and health monitoring
AU - Luo, Jianlin
AU - Li, Hui
AU - Xian, Guijun
PY - 2011
Y1 - 2011
N2 - FRP bridge decks are designed to withstand high load levels and a lifetime of several ten years, facing an extremely high number of load cycles. The fatigue life and degradation of the mechanical properties are needed to be essentially considered during the service of the FRP deck. In the present study, a novel electrically conductive coating was developed with a function of strain monitoring for the FRP bridge deck. An epoxy resin was modified with multi-walled nanotube (MWCNT) in order to achieve electrical conductivity. Processing, structure and properties of the MWCNT-epoxy nanocomposite were optimized, and the correlation between the strain level and electrical conductivity of the coating was set up. The conductivity of the coating on the FRP bridge deck is tracked with a simple electrical measurement, and the strain of the FRP bridge deck is obtained through the determined conductivity ∼ strain relationship. It is worth noting that the damage modes of the coatings (also the coated FRP surface) can be determined from the conductivity curves. Together with the easy application and data collection, such coating has a high potential for the application in stress/strain and health monitoring.
AB - FRP bridge decks are designed to withstand high load levels and a lifetime of several ten years, facing an extremely high number of load cycles. The fatigue life and degradation of the mechanical properties are needed to be essentially considered during the service of the FRP deck. In the present study, a novel electrically conductive coating was developed with a function of strain monitoring for the FRP bridge deck. An epoxy resin was modified with multi-walled nanotube (MWCNT) in order to achieve electrical conductivity. Processing, structure and properties of the MWCNT-epoxy nanocomposite were optimized, and the correlation between the strain level and electrical conductivity of the coating was set up. The conductivity of the coating on the FRP bridge deck is tracked with a simple electrical measurement, and the strain of the FRP bridge deck is obtained through the determined conductivity ∼ strain relationship. It is worth noting that the damage modes of the coatings (also the coated FRP surface) can be determined from the conductivity curves. Together with the easy application and data collection, such coating has a high potential for the application in stress/strain and health monitoring.
UR - https://www.scopus.com/pages/publications/84896444652
U2 - 10.1007/978-3-642-17487-2_55
DO - 10.1007/978-3-642-17487-2_55
M3 - 会议稿件
AN - SCOPUS:84896444652
SN - 9783642174865
T3 - Advances in FRP Composites in Civil Engineering - Proceedings of the 5th International Conference on FRP Composites in Civil Engineering, CICE 2010
SP - 260
EP - 263
BT - Advances in FRP Composites in Civil Engineering - Proceedings of the 5th International Conference on FRP Composites in Civil Engineering, CICE 2010
PB - Springer Berlin Heidelberg
T2 - 5th International Conference on FRP Composites in Civil Engineering, CICE 2010
Y2 - 27 September 2010 through 29 September 2010
ER -