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  1. Blast- Induced Structural and Crack Response of a Brick Residential Structure Near an Aggregate Quarry

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    Description: This article summarizes an investigation of the structural response of a brick façade home in New Mexico. The subject Ricter residence was located some 1100 to 1400 ft away from an aggregate quarry, and was subjected to a maximum peak particle velocity and air blast over pressure of 0.29 ips...
    Keyword: brick facade, airblast overpressures, and structural response
    Creator: Charles H Dowding and Catherine Aimone-Martin
    Owner: Chris Diaz
    Date Uploaded: 05/05/2017
    Date Modified: 08/14/2017
    Date Created: 2005-02-25
    Rights: All rights reserved
    Resource Type: Article
  2. Acoustic Emission Monitoring for Assessment of Steel Bridge Details

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    Description: Acoustic emission (AE) testing was deployed on details of two large steel Interstate Highway bridges: one cantilever through-truss and one trapezoidal box girder bridge. Quantitative measurements of activity levels at known and suspected crack locations were made by monitoring AE under normal service loads (e.g., live traffic and wind). AE...
    Keyword: Acoustic emission testing
    Creator: Corr, D. J., Kosnik, D. E. , and Hopwood, T.
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 2010
    Rights: All rights reserved
    Resource Type: Research Paper
  3. White Paper: Tiltmeter-Based Bridge Scour Monitoring

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    Description: Scour is by far the primary cause of bridge failures in the United States. Scour and other hydraulic effects are particularly threatening because the deterioration is often invisible, hidden beneath turbid water. Many scour monitoring methods attempt to measure the development of scour pockets themselves. However, this is difficult due...
    Keyword: Tiltmeter and Scours at bridges
    Creator: Kosnik, David and Ng, Steve
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 2010-02-17
    Rights: All rights reserved
    Resource Type: Research Paper
  4. Noise Localization via Acoustic Emission Monitoring on a Rolling Leaf Bascule Bridge

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    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 W. Prine, David E. Kosnik, and David Corr
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 2009-06-10
    Rights: All rights reserved
    Resource Type: Report
  5. A new approach to acoustic emission testing of difficult-to-reach steel bridge details

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    Description: Kosnik, D. E., Northwestern University . Infrastructure Technology Institute, Department of Civil Environmental Engineering, Robert R. McCormick School of Engineering Applied Science. (2008). A new approach to acoustic emission testing of difficult-to-reach steel bridge details. Evanston, Illinois: Infrastructure Technology Institute/Department of Civil & Environmental Engineering.
    Keyword: Acoustic emission testing
    Creator: Kosnik, David E.
    Owner: Nurganym Agzamova
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 2008
    Rights: All rights reserved
    Resource Type: Research Paper
  6. Localization of Noise Sources in Large Structures Using AE

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    Description: This paper describes application of AE monitoring techniques to localize the sources of large noises in civil structures. These noises occur during operation of moveable portions of a structure in such things as lift bridges and moveable sports stadium roofs. The use of straightforward AE monitoring techniques can provide clear...
    Keyword: Acoustic emission testing
    Creator: Prine, David
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 2004
    Rights: All rights reserved
    Resource Type: Research Paper
  7. Acoustic Emission Tests Fremont Bridge Portland, Oregon

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    Description: This report includes the findings of acoustic emission (AE) tests on the Fremont tied arch bridge in Portland Oregon conducted by research engineers from the Infrastructure Technology Institute of Northwestern University on March 24th, 1997.
    Keyword: Acoustic emission testing
    Creator: Prine, David
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 1997
    Rights: All rights reserved
    Resource Type: Report
  8. Acoustic emission and strain gage monitoring of prototype retrofit for Caltrans Structure B-22-26 R/L, I-80 Sacramento River (Bryte Bend), Sacramento, California.

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    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: Prine, David W. and Marron, Daniel
    Owner: Nurganym Agzamova
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 1997-04-18
    Rights: All rights reserved
    Resource Type: Report
  9. Application of Acoustic, Strain, and Optical Sensors to NDE of Steel Highway Bridges

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    Description: Current bridge condition determination is based almost entirely on the use of visual inspection. This approach to bridge inspection provides data that is subjective and not traceable. Nondestructive evaluation (NDE) is a tool that in actuality is little used on bridges, but could eliminate much of the subjectivity of the...
    Keyword: Acoustic emission testing
    Creator: Prine, David
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 1995-05
    Rights: All rights reserved
    Resource Type: Report
  10. Remote Global Monitoring of the Michigan Street Bridge, Sturgeon Bay, Wisconsin

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    Description: A remote global monitoring system is being operated on a 65 year old lift bridge in Sturgeon Bay Wisconsin. The system uses both strain gages and clinometers to continuously monitor the "health" of the fracture critical components of the bridge. Ruggedized miniaturized data loggers are locally mounted on the structure...
    Keyword: Acoustic emission testing
    Creator: Fish, Philip and Prine, David
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 1997
    Rights: All rights reserved
    Resource Type: Report