Debonding failure has been reported as the dominant failure mode for FRP strengthening in flexure. This paper explores a novel debonding monitoring method for FRP strengthened structures by means of OTDR-based fiber optic technology. Interface slip as a key factor in debonding failures will be measured through sensing optic fibers. FRP pulling tests were conducted to verify the proposed monitoring method. It is found that the proposed method is feasible in slip measurement with high sensitivity, and would be cost effective because of the low price of sensors used, which shows its potential for large-scale applications in civil infrastructures, especially for bridges.


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    Title :

    Monitoring of FRP-Repair Debonding Using OTDR Techniques


    Contributors:
    Hou, Shuang (author) / Cai, C. S. (author) / Ou, Jinping (author)

    Conference:

    11th Biennial ASCE Aerospace Division International Conference on Engineering, Science, Construction, and Operations in Challenging Environments ; 2008 ; Long Beach, California, United States


    Published in:

    Publication date :

    2008-09-04




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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