Vibration Based Damage Detections of Scour in Coastal Bridges
Elsaid, Adel H.
MetadataShow full item record
"The ability to ensure the resiliency and to predict the future performance of coastal bridges is very dependent on identifying damages in critical components of the bridge rapidly after an event. Traditional vibration based damage detection efforts focused mainly on the detection of fatigue cracking. Although detecting fatigue cracking is important, it does not contribute significantly to the total number of bridge failures in the United States. A critical review of the up-to-date literature showed that hydraulic loading, including scour, is responsible for about 50% of the failed bridges. To this end, the primary focus of this project is the development and evaluation of damage features capable of rapidly identifying and quantifying the extent of deterioration of critical coastal bridge structures due to scour at submerged piers following extreme storm events. This paper illustrates the use of the curvature of horizontal mode shapes and introduces the 'Modified Curvature Damage Factor.''"
This article appeared in Homeland Security Affairs (April 2012), supplement 4, article 2
Showing items related by title, author, creator and subject.
Naval Postgraduate School Center for Homeland Defense and Security (CHDS) (Monterey, California. Naval Postgraduate SchoolCenter for Homeland Defense and Security, 2005-09);September 2005. Welcome to the second issue of Homeland Security Affairs. The central theme is Hurricane Katrina. We also offer articles about critical infrastructure protection and capabilities based planning. One of ...
Hannum, Charles Ray.; Wyatt, Raymond E. (Monterey, California: U.S. Naval Postgraduate School, 1963);Copper films of calculated thicknesses between 200 and 500° have been evaporated on tin films about 1000 and 2000° thick and the superconducting properties studied. In every case, the critical current for the coated ...
Blanco, Hilda (2008-06);Prioritizing is a fundamental task in capital facilities planning and finance. The protection of critical infrastructure systems, essential systems that underpin our society’s “national defense, economic prosperity and ...