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dc.contributor.authorMoughty, John James
dc.contributor.authorCasas Rius, Joan Ramon
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2018-08-28T06:29:58Z
dc.date.issued2018
dc.identifier.citationMoughty, J., Casas, J. Development of vibration-based parameters as damage sensitive features for bridge structures. A: International Conference on Bridge Maintenance, Safety and Management. "Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges: Proceedings of the Ninth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2018), 9-13 July 2018, Melbourne, Australia". 2018, p. 1-9.
dc.identifier.isbn9781138730458
dc.identifier.urihttp://hdl.handle.net/2117/120602
dc.description.abstractThe process of damage identification in bridge structures traditionally involves the extraction of one or more of the numerous modal-based Damage Sensitive Features (DSFs) from vibration data obtained by direct sensor measurement. However the performance of these modal-based DSFs can suffer under chang-ing environmental and operational conditions and are generally limited by their methodology, which assumes linear structural behaviour and signal stationarity. The present paper presents a detailed overview of the de-velopment of alternative DSFs derived from vibration characteristics, focusing on their conception, damage sensitivity evaluation and performance robustness assessment. Initially, selected vibration parameters are out-lined before their damage sensitivity is determined on progressive damage test data obtained from a post-tensioned three-span bridge under ambient conditions using supervised machine learning techniques in con-junction with the Minimum Covariance Determinate (MCD) estimator to mitigate uncertainty surrounding sources of excitation. Secondly, the performance robustness of the vibration-based DSFs is assessed on highly non-stationary data obtained from a progressively damaged steel truss bridge subjected to vehicle induced ex-citation. Finally, a comparative evaluation of the vibration-based DSFs is made against modal-based DSFs performance from the literature.
dc.format.extent9 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Tipologies estructurals
dc.subject.lcshBridges--Vibration
dc.titleDevelopment of vibration-based parameters as damage sensitive features for bridge structures
dc.typeConference report
dc.subject.lemacPonts -- Vibració
dc.contributor.groupUniversitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac23302751
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020/642453/EU/Training in Reducing Uncertainty in Structural Safety/TRUSS
dc.date.lift10000-01-01
local.citation.authorMoughty, J.; Casas, J.
local.citation.contributorInternational Conference on Bridge Maintenance, Safety and Management
local.citation.publicationNameMaintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges: Proceedings of the Ninth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2018), 9-13 July 2018, Melbourne, Australia
local.citation.startingPage1
local.citation.endingPage9


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