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Development of vibration-based parameters as damage sensitive features for bridge structures
dc.contributor.author | Moughty, John James |
dc.contributor.author | Casas Rius, Joan Ramon |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental |
dc.date.accessioned | 2018-08-28T06:29:58Z |
dc.date.issued | 2018 |
dc.identifier.citation | Moughty, 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.isbn | 9781138730458 |
dc.identifier.uri | http://hdl.handle.net/2117/120602 |
dc.description.abstract | The 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.extent | 9 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Tipologies estructurals |
dc.subject.lcsh | Bridges--Vibration |
dc.title | Development of vibration-based parameters as damage sensitive features for bridge structures |
dc.type | Conference report |
dc.subject.lemac | Ponts -- Vibració |
dc.contributor.group | Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 23302751 |
dc.description.version | Postprint (published version) |
dc.relation.projectid | info:eu-repo/grantAgreement/EC/H2020/642453/EU/Training in Reducing Uncertainty in Structural Safety/TRUSS |
dc.date.lift | 10000-01-01 |
local.citation.author | Moughty, J.; Casas, J. |
local.citation.contributor | International Conference on Bridge Maintenance, Safety and Management |
local.citation.publicationName | 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 |
local.citation.startingPage | 1 |
local.citation.endingPage | 9 |