Distributed cable sensors for structural damage detection: Implementation issues

Michael Brower*, Zachary Royer, Genda Chen, David Van Aken, David Pommerenke

*Corresponding author for this work

Research output: Contribution to conferencePaper

Abstract

A new concept for the design of coaxial cables was recently proposed and developed by the research team by introducing the change in topology of the cable structure when the cable is subjected to strain effects. In this study, three implementation issues are discussed to further advance the emerging technology towards its commercialization and implementation for crack monitoring and detection of reinforced concrete (RC) structures. They include plasma sprayed coating of a coaxial cable sensor, correlation between the reflection coefficient and the width of a crack, and interference of steel reinforcing bars with the electromagnetic field used for time-domain reflectometry measurements. Test results have shown that the sprayed coating can significantly enhance the uniformity of coaxial cable sensors and thus the quality of measured data. With controlled cracking tests, the peak reflection coefficient was found linearly related to the width of a crack. Furthermore, the interference by the adjacent steel bars is negligible even when a coaxial sensor is nearly in contact with a reinforcing bar.

Original languageEnglish
Number of pages1
DOIs
Publication statusPublished - 28 Dec 2006
Externally publishedYes
EventStructures Congress 2006 - St. Louis, MO, United States
Duration: 18 May 200621 May 2006

Conference

ConferenceStructures Congress 2006
CountryUnited States
CitySt. Louis, MO
Period18/05/0621/05/06

ASJC Scopus subject areas

  • Engineering(all)

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