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Title |
Development of Corrosion Detection Method for Closed U-ribs in Steel Bridges Using Ultrasonic Velocity Method
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Authors |
김우석(Woo-Seok Kim) ; 문성모(Seong-Mo Mun) ; 김철민(Cheol-Min Kim) ; 이강문(Kang-Moon Lee) ; 임석빈(Seok-Been Im) |
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DOI |
https://doi.org/10.11112/jksmi.2021.25.6.254 |
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Abstract |
This study was intended to develop an inspection method to detect defects in closed-cell steel members in steel girder bridges. The ultrasonic pulse velocity method was selected as a rapid and effective method to identify thickness changes of steel specimens caused by corrsion. This study developed an algorithm to expedite the process and improve the accuracy in the prediction of steel plate thickness. Also, both static and continuous scanning methods were compared to each other to identify the difference in accuracy, but the results revealed that both methods produce almost the same results. This study also provided the idea to calculate the height of water contained in the closed-cell steel member and results of laboratory experimental results. The water heights which is thicker than the steel plate thickness were detectable and predicted using the idea suggested by this study, but the water heights lower than the steel plate thickness were not possible. However, the results showed whether the steel member contains water or not.
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