In this paper, the development of a fundamentally new, topology-based cable sensor design concept is summarized for crack detection in reinforced concrete (RC) structures. The sensitivity, spatial resolution, and signal loss of sensors are investigated both numerically and experimentally. Two sensors were fabricated and validated with small- and large-scale laboratory tests under different loads. Both were proven sensitive to crack of various sizes from visually undetectable to excessive, giving the location and severity of damage simultaneously. One sensor has been installed on a three-span bridge for its long-term monitoring. It is capable of recording damage that has occurred during a recent event.
G. Chen and D. Pommerenke, "Novel Distributed Cable Sensors for Detection of Cracks in RC Structures," Proceedings of the AIP Conference: Review of Progress in Quantitative Nondestructive Evaluation, American Institute of Physics (AIP), Mar 2006.
The definitive version is available at http://dx.doi.org/10.1063/1.2184680
Civil, Architectural and Environmental Engineering
Electrical and Computer Engineering
Keywords and Phrases
Concrete; crack detection; sensors
Article - Conference proceedings
© 2006 American Institute of Physics (AIP), All rights reserved.