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contributor authorSreenivas Alampalli
contributor authorGongkang Fu
contributor authorEverett W. Dillon
date accessioned2017-05-08T20:56:38Z
date available2017-05-08T20:56:38Z
date copyrightFebruary 1997
date issued1997
identifier other%28asce%290733-9445%281997%29123%3A2%28237%29.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/32667
description abstractRemote bridge-monitoring systems based on measured structural vibration have been perceived to be able to assist in bridge inspection for future. Sensitivity of measured modal properties to potential damage is very critical for their practical application, which is examined here. Modal tests were conducted on a one-sixth scale multiple steel-girder model bridge and a fracture critical field bridge, including both intact and simulated damage states. Sensitivity of modal parameters to changes of structural condition was studied using statistical methods (for frequencies, damping ratios, mode shapes, and their derivatives). Results show that, even though modal frequencies and mode shapes may be used to identify the existence of commonly observed bridge damage with certain sensitivity, it is difficult to identify their locations.
publisherAmerican Society of Civil Engineers
titleSignal versus Noise in Damage Detection by Experimental Modal Analysis
typeJournal Paper
journal volume123
journal issue2
journal titleJournal of Structural Engineering
identifier doi10.1061/(ASCE)0733-9445(1997)123:2(237)
treeJournal of Structural Engineering:;1997:;Volume ( 123 ):;issue: 002
contenttypeFulltext


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