Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/22922
DC FieldValueLanguage
dc.contributor.authorSakaris, Christos S.-
dc.contributor.authorBashir, Musa-
dc.contributor.authorYang, Yang-
dc.contributor.authorMichailides, Constantine-
dc.contributor.authorWang, Jin-
dc.contributor.authorSakellariou, John S.-
dc.date.accessioned2021-08-30T08:29:54Z-
dc.date.available2021-08-30T08:29:54Z-
dc.date.issued2021-09-01-
dc.identifier.citationEngineering Structures, 2021, vol. 242, articl. no. 112384en_US
dc.identifier.issn01410296-
dc.identifier.urihttps://hdl.handle.net/20.500.14279/22922-
dc.description.abstractThe problem of damaged tendon diagnosis (damage detection, damaged tendon identification and damage precise quantification) in a new multibody offshore platform supporting a 10 MW Floating Offshore Wind Turbine (FOWT) is investigated for the first time in this study. Successful operation of the multibody FOWT depends on the integrity of its tendons connecting the upper and lower tanks of the platform. Thus, early diagnosis of the damaged tendons is of high importance and it is achieved through a vibration-based methodology. Damage detection is accomplished based on the detection of changes in the vibration response power spectral density, while damaged tendon identification and damage precise quantification are accomplished through the Functional Model Based Method (FMBM). The FMBM is appropriately formulated in this study to operate with only vibration response signals. The employed vibration responses under healthy and damaged states of the FOWT platform are obtained from a numerical model describing the platform's dynamics. Each examined damage scenario corresponds to the reduced stiffness at the connection point of a single tendon to the platform's upper tank. Subtle damages corresponding to a stiffness reduction of [10–25] %, have minor effects on the platform's dynamics due to the tendons’ high strength, while damages corresponding to a stiffness reduction of [10–85] % on different tendons have similar effects on the dynamics, thus leading to an overall highly challenging diagnosis problem. The use of a single underwater accelerometer as well as a low and limited frequency bandwidth of surge acceleration signals, is explored. The results show that effective, reliable and very quick damaged tendon diagnosis is achieved via FMBM using the multibody FOWT platform's dynamics under damaged tendons.en_US
dc.formatpdfen_US
dc.language.isoenen_US
dc.relation.ispartofEngineering Structuresen_US
dc.rights© Elsevieren_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectDamaged tendon diagnosisen_US
dc.subjectStructural health monitoringen_US
dc.subjectFunctional modelsen_US
dc.subjectStatistical time series methodsen_US
dc.subjectFloating offshore wind turbine platformen_US
dc.subjectStation-keeping of offshore platformen_US
dc.titleDiagnosis of damaged tendons on a 10 MW multibody floating offshore wind turbine platform via a response-only functional model based methoden_US
dc.typeArticleen_US
dc.collaborationLiverpool John Moores Universityen_US
dc.collaborationCyprus University of Technologyen_US
dc.collaborationUniversity of Patrasen_US
dc.subject.categoryEnvironmental Engineeringen_US
dc.journalsSubscriptionen_US
dc.countryUnited Kingdomen_US
dc.countryCyprusen_US
dc.countryGreeceen_US
dc.subject.fieldEngineering and Technologyen_US
dc.publicationPeer Revieweden_US
dc.identifier.doi10.1016/j.engstruct.2021.112384en_US
dc.identifier.scopus2-s2.0-85107158616-
dc.identifier.urlhttps://api.elsevier.com/content/abstract/scopus_id/85107158616-
dc.relation.volume242en_US
cut.common.academicyear2021-2022en_US
item.grantfulltextnone-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.openairetypearticle-
item.cerifentitytypePublications-
item.fulltextNo Fulltext-
crisitem.journal.journalissn0141-0296-
crisitem.journal.publisherElsevier-
crisitem.author.deptDepartment of Civil Engineering and Geomatics-
crisitem.author.facultyFaculty of Engineering and Technology-
crisitem.author.orcid0000-0002-2016-9079-
crisitem.author.parentorgFaculty of Engineering and Technology-
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