Title

Distributed Coaxial Cable Crack Sensors for Crack Mapping in RC

Abstract

New type of distributed coaxial cable sensors for health monitoring of large-scale civil infrastructure was recently proposed and developed by the authors. This paper shows the results and performance of such sensors mounted on near surface of two flexural beams and a large scale reinforced concrete box girder that was subjected to twenty cycles of combined shear and torsion. The main objectives of this health monitoring study was to correlate the sensor's response to strain in the member, and show that magnitude of the signal's reflection coefficient is related to increases in applied load, repeated cycles, cracking, crack mapping, and yielding. The effect of multiple adjacent cracks, and signal loss was also investigated.

Meeting Name

2005 SPIE's International Symposium on Smart Structures and Materials

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Flexural Beams; Reinforced Concrete Box Girder; Sensors; Shear

Library of Congress Subject Headings

Coaxial cables
Torsion

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2005 SPIE -- The International Society for Optical Engineering, All rights reserved.


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