Show simple item record

dc.contributor.authorGhorbani, Esmaeil
dc.contributor.authorBuyukozturk, Oral
dc.contributor.authorCha, Young-Jin
dc.date.accessioned2021-10-06T13:46:59Z
dc.date.available2021-10-06T13:46:59Z
dc.date.issued2020-05
dc.date.submitted2020-05
dc.identifier.issn0888-3270
dc.identifier.urihttps://hdl.handle.net/1721.1/132727
dc.description.abstractA novel hybrid output-only structural identification and damage identification method is proposed. The method is developed by integration of Kalman filtering, as a model-based technique, and random decrement, as a data-driven technique. The random decrement method extracts free vibration from the measured responses of structural system under various types of loadings. The extracted free vibration is inputted to the Kalman filtering system to estimate the status of the structural system. In contrast to the traditional output-only techniques using Kalman filter, it is not required to estimate the input excitation in the damage detection process. The Kalman filter uses only the free vibration responses extracted from the random decrement. This also leads to downsizing the size of unknown state vector, which consequently decreases computational cost significantly. Since it is not required to use any parameter related to excitations in the mathematical model, the uncertainty of the physical model decreases. The proposed approach is numerically verified in three-degrees of freedom and ten-degrees of freedom systems under three different loading conditions. It is shown that the approach is robust to provide accurate estimation of states under physical changes due to structural damage assuming the input data is unknown. As another verification, the stiffness and damping matrices of a seven-story building on a shake table are estimated to show the capability of the method for damage identification of real structures. These numerical and experimental case studies demonstrate that the proposed technique is capable of detecting, localizing, and quantifying the extent of damage in a structure under a combination of any kinds of loadings.en_US
dc.language.isoen
dc.publisherElsevier BVen_US
dc.relation.isversionof10.1016/J.YMSSP.2020.106977en_US
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs Licenseen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.sourceOther repositoryen_US
dc.titleHybrid output-only structural system identification using random decrement and Kalman filteren_US
dc.typeArticleen_US
dc.identifier.citationEsmaeil Ghorbani, Oral Buyukozturk, Young-Jin Cha, Hybrid output-only structural system identification using random decrement and Kalman filter, Mechanical Systems and Signal Processing, Volume 144, 2020en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Civil and Environmental Engineering
dc.relation.journalMechanical Systems and Signal Processingen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2021-10-05T17:06:25Z
dspace.orderedauthorsGhorbani, E; Buyukozturk, O; Cha, Y-Jen_US
dspace.date.submission2021-10-05T17:06:27Z
mit.journal.volume144en_US
mit.licensePUBLISHER_POLICY
mit.metadata.statusAuthority Work Neededen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record