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Acoustic Emission Monitoring of Steel Bridges

by A. K. Maji, (M.ASCE), Univ of New Mexico, Albuquerque, NM, USA,
T. Kratochvil, Univ of New Mexico, Albuquerque, NM, USA,



Document Type: Proceeding Paper

Part of: Structures Congress XII

Abstract:

Global nondestructive monitoring techniques are of great significance for rapid monitoring of bridges. One promising technique involves monitoring the microseismic events (Acoustic Emissions, AE) that are caused by crack propagation, friction at joints, etc. The propagation of AE waves in steel structures was studied in a laboratory program, and involved evaluating algorithms used for locating crack propagation, and determining frequency content of AE events. Field testing of highway bridge in New Mexico were subsequently performed on a plate-girder bridge (I-40 bridge over Rio-Grande), at Albuquerque, NM.

Subject Headings: Steel bridges | Bridge tests | Steel structures | Highway bridges | Girder bridges | Field tests | Cracking | New Mexico | United States

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