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Description:: The U.S. has 542,000 bridges that consume billions of dollars per year in construction, rehabilitation and maintenance funds and which are the lifelines of U.S. commerce. The 1992 ISTEA (fntermodal Surface Transportation Efficiency Act) mandates the implementation of a quantitative computerized bridge management system by I 996. A prime need...
Keyword:: Acoustic emission testing
Creator:: David W. Prine
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/26/2017
Date Modified:: 08/14/2017
Date Created:: 1995-06-06
Resource Type:: Report

Description:: Acoustic emission (AE) testing was used to identify the source of audible “bangs” generated during opening and closing of a large, double-leaf rolling-lift bascule bridge. The data were analyzed using a combination of well-established AE techniques, including first hit analysis (FHA), planar location analysis, and linear location analysis. The FHA...
Keyword:: Acoustic emission testing
Creator:: Matthew P. Kotowsky , David E. Kosnik, David Corr, and David W. Prine
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 06/21/2017
Date Modified:: 08/14/2017
Date Created:: 2009-06-10
Resource Type:: Report

Description:: The in-depth inspection by WIDOT detected two sites that had visible cracks in the stiffener-to-hanger diaphragm welds, the east side of Hanger 6 in the north tie girder, and the east side of Hanger 4 in the south tie girder. Additionally, many ultrasonic indications were detected by WIDOT in the...
Keyword:: Acoustic emission testing
Creator:: David W. Prine
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/26/2017
Date Modified:: 08/14/2017
Date Created:: 1993-06-16
Resource Type:: Report

Description:: This technical report shows the findings of acoustic emission and strain gage monitoring tests conducted by research engineers of Infrastructure Technology Institute from Northwestern University on April 18, 1997 in Sacramento, California.
Keyword:: Acoustic emission testing
Creator:: Marron, Daniel and Prine, David W.
Owner:: Nurganym Agzamova
Language:: English
Date Uploaded:: 06/21/2017
Date Modified:: 08/14/2017
Date Created:: 1997-04-18
Resource Type:: Report

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