Determination of displacements on built-up steel beams during experiments by image processing

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dc.authoridOZSARIYILDIZ, Saban Suat/0000-0002-3467-0630
dc.authoridDugenci, Oguz/0000-0002-5033-125X
dc.contributor.authorOzsariyildiz, Saban S.
dc.contributor.authorDugenci, Oguz
dc.contributor.authorSulev, Ertan
dc.date.accessioned2025-02-24T17:18:42Z
dc.date.available2025-02-24T17:18:42Z
dc.date.issued2021
dc.departmentFakülteler, Mühendislik Fakültesi, İnşaat Mühendisliği Bölümü
dc.description.abstractIn this study, an image processing technique is developed for measuring the displacements during flexural loading experiments of structural beams as an alternative to measurements by traditional gauging devices. In this context, four-point bending tests were carried out on three built-up (welded) steel beams, one of them without stiffening plates and the others with stiffening plates. In the experiments, while the load-deflection values in each loading step were taken using load cells and LVDTs, a video recording of the experiments was simultaneously taken. The load-deflection curves were comparatively constructed using both the values measured with LDVTs and the data obtained by image processing. In order to match the data obtained using the point flow method of image processing technique to the gauged measurements, the scale coefficients in pixel / mm unit were calculated. The mean absolute error (MAE) and root mean square error RMSE error values were computed to determine the efficacy of the scale coefficients. The MAE and RMSE values for the beam without the stiffening plates turned out to be 3.42 and 4.52, while they were 1.29 and 1.82 for the beams with the stiffening plates. According to these results, the higher the lateral torsional buckling, the more difficult it is to determine the verification coefficient. The accuracy of the image processing method developed herein for determination of in-plane displacements can be further improved easily for experiments involving out-of-plane displacements due to local buckling also if the recordings of more cameras from different angles are included in the analyses. (c) 2021 Elsevier Ltd. All rights reserved.
dc.description.sponsorshipErciyes University Scientific Research Projects Coordination Unit [FYL-2018-8267]
dc.description.sponsorshipPart of this study was supported by Erciyes University Scientific Research Projects Coordination Unit with the project code FYL-2018-8267.
dc.identifier.doi10.1016/j.jcsr.2021.106560
dc.identifier.issn0143-974X
dc.identifier.issn1873-5983
dc.identifier.scopus2-s2.0-85101210222
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.jcsr.2021.106560
dc.identifier.urihttps://hdl.handle.net/20.500.14440/812
dc.identifier.volume179
dc.identifier.wosWOS:000623855100002
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofJournal of Constructional Steel Research
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250201
dc.subjectBuilt-up steel beam
dc.subjectBracketed steel beam
dc.subjectStiffener plate
dc.subjectFlexural test of beams
dc.subjectBending behavior
dc.subjectImage processing
dc.subjectImage processing on structural members
dc.subjectMeasurement of displacement
dc.titleDetermination of displacements on built-up steel beams during experiments by image processing
dc.typeArticle

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