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    Development of a relative displacement sensor for structural health monitoring

    231500_231500.pdf (432.6Kb)
    Access Status
    Open access
    Authors
    Li, Jun
    Hao, Hong
    Fan, K.
    Date
    2013
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Li, J. and Hao, H. and Fan, K. 2013. Development of a relative displacement sensor for structural health monitoring, in Proceedings of the Thirteenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-2013), Sep 11-13 2013. Sapporo, Japan: Hokkaido University.
    Source Title
    Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013
    Additional URLs
    http://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/54205/1/easec13-A-2-3.pdf
    School
    Department of Civil Engineering
    URI
    http://hdl.handle.net/20.500.11937/32151
    Collection
    • Curtin Research Publications
    Abstract

    This paper presents the structure, design principle, features and calibration of a developed relative displacement sensor for structural health monitoring. Relative displacement is measured from four strain gauges stuck on a square component connecting two pads, which are used to fix the sensor on the testing structure. The output voltage due to the shear distortion is calculated based on the principle of Wheatstone bridge circuit. The design of the sensor ensures that there are no voltage outputs for the tension, compression, bending and torsion effects. The developed relative displacement sensor is used to monitor the conditions of shear connectors in a composite bridge. The sensitive radius of the sensor to detect the deterioration of shear connectors is investigated. The developed sensor is easy to be installed on structures to detect conditions.

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