This paper studies the flexural fatigue performance of damaged steel beams strengthened by carbon fiber reinforced plastic-optical fiber bragg grating (CFRP-OFBG) plates. By analyzing the test beam’s failure mechanism under cyclic loading and the strain data monitored by the CFRP-OFBG panel in real-time, a life prediction model based on cumulative fatigue damage is proposed. The test results show that CFRP-OFBG plate reinforcement effectively reduces the fatigue crack growth rate of damaged steel beams and increases the fatigue life of damaged steel beams by 22.46%. The analysis and test results show that the minimum error between the calculated value of the life prediction model and the test value is −24.13%, and the maximum error is −5.61%. This study provides some suggestions for improving the service life of existing fatigue-damaged steel beams and establishing a simple fatigue life evaluation model.


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    Title :

    Study on the Flexural Fatigue Performance of CFRP-OFBG Plate Reinforced Damaged Steel Beams


    Additional title:

    KSCE J Civ Eng


    Contributors:
    Deng, Langni (author) / Zhong, Mengjun (author) / Liu, Yang (author) / Liao, Ling (author) / Lai, Shijin (author) / Lei, Lizhen (author) / Zhou, Zheng (author)

    Published in:

    Publication date :

    2021-12-01


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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