Development of a flexible capacitive sensor for concrete structure health monitoring

Yu Cheng; Asad Hanif; Zongjin Li

doi:10.1117/12.2306201

27 March 2018 Development of a flexible capacitive sensor for concrete structure health monitoring

Yu Cheng, Asad Hanif, Zongjin Li

Proceedings Volume 10598, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018; 105980N (2018) https://doi.org/10.1117/12.2306201
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2018, Denver, Colorado, United States

Abstract

Considering the limitations of the current structure health monitoring techniques, a novel low-cost capacitive transducer (CT) using capacitance signals, which has the potential to provide accurate health assessment and damage prediction for reinforcement concrete structures, is firstly developed. Four major works including the development of the capacitive sensor, the optimization work of CT sensor design, the application of the CT in rebar size/depth/position and rebar corrosion tests using the developed CT are mainly introduced. Results have shown that the developed CT with innovative capacitance measuring method has great accuracy in predicting the rebar size and position inside a large structure, which is the foundation of the reinforcement corrosion detection. It can be concluded that the developed capacitive transducer is applicable in the condition tests of reinforced concrete structures and it paves the way for evaluation of the corrosion degree of the reinforced rebar.

Citation Download Citation

Yu Cheng, Asad Hanif, and Zongjin Li "Development of a flexible capacitive sensor for concrete structure health monitoring", Proc. SPIE 10598, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018, 105980N (27 March 2018); https://doi.org/10.1117/12.2306201

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