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- W2148082124 abstract "This project studied application of acoustic emission (AE) technology to perform structural health monitoring of highway bridges. Highway bridges are a vital part of transportation infrastructure and there is need for reliable non-destructive methods to monitor their structural condition to ensure safety and efficiency. Many factors lead to the deterioration of highway bridges, including aging, extreme events such as natural disasters, other hazards including negligence, improper maintenance, and collisions, and, most importantly, operational loads from the increased freight transportation truck weights. A candidate structure – a steel girder bridge crossing of the Interstate I-64 over the Route 165 Kempsville Road in Norfolk, VA, was selected for this study. This bridge has a known, visually identified defect on girder 9 – crack in the stiffener-to-girder connection weld. Therefore this work concentrated on the AE analysis of girder 9 of this bridge and girder 8 of this structure was taken up for comparison. AE activity was found to be occurring in both girders 8 and 9 of the steel girder bridge selected for this study. There was weak AE activity reported in girder 8 and this activity exhibited no increase during the period of this research. On the other hand, girder 9 of this bridge was found to be experiencing significantly stronger levels of AE activity which noticeably increased during the same period. The majority of the girder 9 AE activity sources were determined to be located in the vicinity of sensors 3, 4, and 5, which is where the visually identified crack exists on the girder. It was confirmed that the AE technique is capable of revealing material defects in steel girder bridges and is suitable for conducting long-term monitoring of structural safety to reduce and prioritize maintenance efforts." @default.
- W2148082124 created "2016-06-24" @default.
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- W2148082124 date "2014-09-01" @default.
- W2148082124 modified "2023-09-26" @default.
- W2148082124 title "Intermodal Transportation Infrastructure Interactions: Utilizing Acoustic Emission and other Non-Destructive Evaluation Technologies" @default.
- W2148082124 hasPublicationYear "2014" @default.
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