Damage detection and calibration from beam–moving oscillator interaction employing surface roughness

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Title: Damage detection and calibration from beam–moving oscillator interaction employing surface roughness
Authors: Jaksic, Vesna
O'Connor, Alan
Pakrashi, Vikram
Permanent link: http://hdl.handle.net/10197/10404
Date: 18-Aug-2014
Online since: 2019-05-13T09:21:12Z
Abstract: The possibility of employing bridge deck surface roughness for Structural Health Monitoring (SHM) under operational conditions is proposed in this paper. A bilinear breathing crack in a damaged Euler-Bernoulli beam traversed by a moving oscillator is considered in this regard. The Road Surface Roughness (RSR) of the beam is classified as per ISO 8606:1995(E). The interaction of the moving oscillator with surface roughness is exploited to define simple, consistent, easy to implement and robust statistical descriptors to detect and calibrate the existence, the location and the extent of damage. The effects of vehicle speed and variable RSR profiles for such detection are investigated and preferable conditions for detection are identified. The proposed method is also suitable for experimental analysis where a theoretical model is not available or is not credibly ascertained.
Funding Details: Irish Research Council
Type of material: Journal Article
Journal: Journal of Sound and Vibration
Volume: 333
Issue: 17
Start page: 3917
End page: 3930
Copyright (published version): 2014 Elsevier
Keywords: Bridge deck surface roughnessStructural Health Monitoring (SHM)Breathing crackBeamRoad Surface Roughness (RSR)Theoretical model
DOI: 10.1016/j.jsv.2014.04.009
Language: en
Status of Item: Peer reviewed
Appears in Collections:Mechanical & Materials Engineering Research Collection

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