Description
In this study, three Gr/AgNW-based, Fe-C coated long period fiber gratings (LPFG) corrosion sensors were prepared and tested for corrosion-induced mass loss measurements under various strain levels. Graphene grew on a copper foil using a low pressure chemical vapor deposition, was transferred to the curve surface of each LPFG sensor, and strengthened by silver nanowire (AgNW) for a more robust electroplating process of the Fe-C layer. The three Fe-C coated LPFG sensors were subjected to three different strain levels: 0, 500 and 1000 με. The sensors were immersed up to 72 hours in 3.5% w.t NaCl solution. Both optical transmission spectra and electrical impedance spectroscopy (EIS) data were simultaneously collected from each Fe-C coated sensor. Compared with the zero-strained sensor, the strained sensors increased their sensitivity by approximately 133% and 182% in Stage I, but reduced to 49% and 24% in Stage II at strain levels of 500 με and 100 με, respectively.
Location
St. Louis, Missouri
Presentation Date
06 Aug 2019, 3:35 pm - 3:55 pm
Meeting Name
INSPIRE-UTC 2019 Annual Meeting
Department(s)
Civil, Architectural and Environmental Engineering
Document Type
Article - Conference proceedings
Document Version
Final Version
File Type
text
Language(s)
English
Source Publication Title
Proceedings of the 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure (2019: Aug. 4-7, St. Louis, MO)
Included in
Corrosion Induced Mass Loss Measurement under Various Strain Levels through Gr/AgNW-based, Fe-C Coated LPFG Sensors
St. Louis, Missouri
In this study, three Gr/AgNW-based, Fe-C coated long period fiber gratings (LPFG) corrosion sensors were prepared and tested for corrosion-induced mass loss measurements under various strain levels. Graphene grew on a copper foil using a low pressure chemical vapor deposition, was transferred to the curve surface of each LPFG sensor, and strengthened by silver nanowire (AgNW) for a more robust electroplating process of the Fe-C layer. The three Fe-C coated LPFG sensors were subjected to three different strain levels: 0, 500 and 1000 με. The sensors were immersed up to 72 hours in 3.5% w.t NaCl solution. Both optical transmission spectra and electrical impedance spectroscopy (EIS) data were simultaneously collected from each Fe-C coated sensor. Compared with the zero-strained sensor, the strained sensors increased their sensitivity by approximately 133% and 182% in Stage I, but reduced to 49% and 24% in Stage II at strain levels of 500 με and 100 με, respectively.
