Strain and deflection analysis in plain concrete beams and reinforced concrete beams by applying Digital Image Correlation

C.A. Mejía, Eva Lantsoght

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

2 Citations (Scopus)
85 Downloads (Pure)

Abstract

Throughout history invasive methods for analyzing deflections and deformations have been used in concrete structures at the laboratory, but the advancement of technology has allowed the development of new non-invasive alternative methods such as digital image correlation (DIC). With this technique, it is possible to obtain information about the deflections, strains and strain fields in a structure. The current study consists of performing a flexural test on plain concrete beams and concrete arches reinforced with FRP rein-forcement. All tests were recorded with a cheap, small camera, then transferred into a series of images in or-der to apply the digital image correlation technique. The analysis with DIC results in the displacements, strains and strain fields of the surface under analysis. Finally, the percentage of error between the displace-ment derived from the DIC technique and the displacement measured by Linear Variable Differential Trans-formers (LVDTs) is calculated. In conclusion, the study shows that it was not possible to reach accuracy on the values of deflections and strains by the applied method and that a higher-speed camera is necessary to capture the moment of failure.
Original languageEnglish
Title of host publicationInsights and Innovations in Structural Engineering, Mechanics and Computation
Subtitle of host publicationProceedings of the 6th International Conference on Structural Engineering, Mechanics and Computation, Cape Town, South Africa, 5-7 September 2016
EditorsAlphose Zingoni
PublisherCRC Press
Pages1-7
Number of pages7
ISBN (Print)978-1-13-802927-9
Publication statusPublished - 2016
Event6th International Conference on Structural Engineering, Mechanics and Computation: Insights and Innovations in Structural Engineering, Mechanics and Computation - Cape Town, South Africa
Duration: 5 Sep 20167 Sep 2016
Conference number: 6

Conference

Conference6th International Conference on Structural Engineering, Mechanics and Computation
Abbreviated titleSEMC 2016
CountrySouth Africa
CityCape Town
Period5/09/167/09/16

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