Novel TDR Sensors for Crack Detection
In this paper, the recent development and validation of a fundamentally new, topology based cable sensor design concept is reviewed 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 has a unique memory feature, capable of recording damage that has occurred during a recent event.
G. Chen, "Novel TDR Sensors for Crack Detection," Review of Progress in Quantitative Nondestructive Evaluation (QNDE), vol. 24, Iowa State University, Aug 2005.
Review of Progress in Quantitative Nondestructive Evaluation (QNDE) (2005: Jul. 31-Aug. 5, Brunswick, ME)
Civil, Architectural and Environmental Engineering
Article - Conference proceedings
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