Research Output

Structural Health Monitoring Using Textile Reinforcement Structures with Integrated Optical Fiber Sensors

  Optical fiber-based sensors " embedded " in functionalized carbon structures (FCSs) and textile net structures (TNSs) based on alkaline-resistant glass are introduced for the purpose of structural health monitoring (SHM) of concrete-based structures. The design aims to monitor common SHM parameters such as strain and cracks while at the same time acting as a structural strengthening mechanism. The sensor performances of the two systems are characterized in situ using Mach-Zehnder interferometric (MZI) and optical attenuation measurement techniques, respectively. For this purpose, different FCS samples were subjected to varying elongation using a tensile testing machine by carefully incrementing the applied force, and good correlation between the applied force and measured length change was observed. For crack detection, the functionalized TNSs were embedded into a concrete block which was then exposed to varying load using the three-point flexural test until destruction. Promising results were observed, identifying that the location of the crack can be determined using the conventional optical time domain reflectometry (OTDR) technique. The embedded sensors thus evaluated show the value of the dual achievement of the schemes proposed in obtaining strain/crack measurement while being utilized as strengthening agents as well.

  • Type:

    Article

  • Date:

    10 February 2017

  • Publication Status:

    Published

  • DOI:

    10.3390/s17020345

  • Library of Congress:

    HV Social pathology. Social and public welfare

  • Dewey Decimal Classification:

    681 Precision instruments & other devices

Citation

Bremer, K., Weigand, F., Zheng, Y., Alwis, L. S., Helbig, R., & Roth, B. (2017). Structural Health Monitoring Using Textile Reinforcement Structures with Integrated Optical Fiber Sensors. Sensors, 2017(17), (345). doi:10.3390/s17020345

Authors

Copyright

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0)

Keywords

structural health monitoring; fiber optic sensor; crack detection; strain sensing; functionalized carbon structure

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