A photogrammetric system design to determine the load-deflection behaviors of materials in civil engineering

dc.contributor.authorYilmazturk, Ferruh
dc.contributor.authorKülür, Sıtkı
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-16T09:15:58Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-16T09:15:58Z
dc.date.issued2011
dc.departmentMühendislik Fakültesi
dc.description.abstractThis paper defines a photogrammetric system developed to automatically measure displacements at a large number of points on structural elements in static or quasi-static load experiments. The system consists of hardware and software. Basically, the hardware component includes online image acquisition system with three charge coupled device (CCD) cameras and the software comprises the photogrammetric processing of the obtained image data. The computational approach of the system involves initially determining the camera calibration parameters, then calculating three-dimensional (3D) object coordinates of signalized points on the test object during the load test. The measurements are performed in near real-time (<1 s), continuously for previously defined time periods or for a single measurement session after every loading by user intervention. For testing purposes, the system was used in the unconfined compression tests on different cohesive soil samples and load tests on a steel beam. Sub-millimeter object point precision was obtained for the 3D object coordinates in all the measurement sessions of both experiments. The axial deformations of cohesive soil samples were measured with a dial gauge and the comparison of the results obtained from both measurement systems indicated that the proposed photogrammetric system is sufficiently reliable and accurate to monitor the deflection behavior of materials under loading conditions.
dc.identifier.doi10.1520/JTE103171
dc.identifier.endpage610en_US
dc.identifier.issn0090-3973
dc.identifier.issn1945-7553
dc.identifier.issue4en_US
dc.identifier.scopusqualityQ3
dc.identifier.startpage603en_US
dc.identifier.urihttps://doi.org/10.1520/JTE103171
dc.identifier.urihttps://hdl.handle.net/20.500.12451/4505
dc.identifier.volume39en_US
dc.identifier.wosWOS:000296596400011
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAmer SOC Testing Materials
dc.relation.ispartofJournal of Testing and Evaluation
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.subjectClose Range Photogrammetry
dc.subjectDisplacement Measurements
dc.subjectLoad Tests
dc.subjectCamera Calibration
dc.subjectAutomated Image Measurement
dc.titleA photogrammetric system design to determine the load-deflection behaviors of materials in civil engineering
dc.typeArticle

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