The analysis of short signal segments and its application to Drive-by bridge inspection

Title: The analysis of short signal segments and its application to Drive-by bridge inspection
Authors: O'Brien, Eugene J.
Keenahan, Jennifer
Permanent link: http://hdl.handle.net/10197/10220
Date: May-2015
Online since: 2019-04-30T11:11:46Z
Abstract: ‘Drive-By’ damage detection is the concept of using sensors on a passing vehicle to detect damage in a bridge. At highway speeds, the vehicle spends a short amount of time on the bridge: it may not even go through a full oscillation, resulting in only a partial signal of the bridge motion being detected. Given that the spectral resolution of standard signal processing techniques depends on the length of data in the signal, they cannot be used to identify the bridge frequency accurately. In addition, the nonlinear and non-stationary nature of the vehicle-bridge interaction system poses challenges. An optimisation approach is proposed here as an alternative to standard signal processing techniques to overcome the challenges of short signals and the nonlinear nature of the drive-by system. Signal pollution due to the road profile is overcome using time-shifted bridge curvatures, a novel damage indicator.
Funding Details: Science Foundation Ireland
Type of material: Journal Article
Publisher: Seventh Sense Research Group
Journal: International Journal of Civil Engineering
Volume: 2
Issue: 9
Keywords: BridgeDamageOptimisationTransformsStructural health monitoringDrive-by inspection
Language: en
Status of Item: Peer reviewed
Appears in Collections:Civil Engineering Research Collection

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