Error Analysis of Displacement Gradients via Finite Element Approximation of Digital Image Correlation System

Beizaee, Shahriyar; William, Kaspar J.; Xotta, Giovanna; Mousavi, Reza

doi:10.21012/fc9.198

Cited by 4 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The evolution of strains and deformations on FRP and concrete have been measured with a DIC system and its tracking method. This method has been widely used for measurements in RC and masonry members [36][37][38]. In order to study the crack characteristics on panel specimens, the DIC system was used on the south side of the specimen.…”

Section: Crack Characteristicsmentioning

confidence: 99%

Behavior of FRP-strengthened RC elements subjected to pure shear

Zomorodian

Yang

Belarbi

et al. 2018

Construction and Building Materials

View full text Add to dashboard Cite

The shear behavior of fiber reinforced polymer strengthened reinforce concrete (FRP strengthened RC) has been the focus of extensive research studies. However, the mechanism of this complex phenomenon has not been fully clarified. Recent analytical models which were developed for predicting the shear capacity of FRP strengthened RC girders were based on test results of simply supported beam specimens with various shear span-to-depth ratios. In such tests no region of the specimen is subjected to uniform stress conditions, Therefore, the results of such tests cannot predict the true pure shear behavior due to non-uniformity of stresses, the presence of flexural and other non-shear related effects such as a/d ratio that cannot be filtered out. Therefore, proper design of shear strengthening using FRP requires testing of elements that are subjected to pure shear case primary before adding other governing effects. This allows a careful investigation and full understanding of the behavior at the element level. In order to accomplish this task, panel testing of representative RC specimens strengthened with FRP sheets were needed. This paper reports the testing of 10 FRP strengthened RC panels subjected to pure shear stress field. The tests were carried out to evaluate the effects of three variables: FRP stiffness, FRP wrapping scheme, and transverse steel reinforcement ratio. The test results showed that these three variables greatly affected the shear behavior due to various types of failure modes associated with FRP strengthening. In addition, it was observed that the magnitude of increased shear capacity associated with the application of FRP sheets depends not only upon the stiffness of FRP, but also on the stiffness of internal shear reinforcement. With the increase of internal steel shear reinforcement, the effectiveness of shear gain due to externally bonded FRP decreases.

show abstract

Section: Crack Characteristicsmentioning

confidence: 99%

Behavior of FRP-strengthened RC elements subjected to pure shear

Zomorodian

Yang

Belarbi

et al. 2018

Construction and Building Materials

View full text Add to dashboard Cite

show abstract

“…There are many works comparing different measurement methods in the literature [5][6][7][8][9][10][11][12][13][14]. The aim of the work was to compare the usefulness of the above methods for measurement operations in civil engineering.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of Selected Strain and Displacement Measurement Techniques in Civil Engineering

Szewczyk

Kudyba²

2022

Buildings

View full text Add to dashboard Cite

The aim of this study was to assess how useful certain selected measurement techniques are in civil engineering. In this work, the focus was placed on the measurement of displacement and strain. Classical methods with an established position in the industry, such as electrical resistance strain gauge measurements and linear variable differential transducers (LVDT), were compared with modern techniques that do not require direct contact with the measured object, such as laser scanning and digital image correlation. A simply supported beam was bent in two types of tests. In the first test, a small load was applied on the beam, causing a slight deflection of the structure of approximately 0.5 mm. This enabled us to assess how effective the tested methods were, given the very precise measurement of the structure. In the second test, a much higher load was introduced, which caused displacement that can realistically be found in actual civil engineering structures. Ultimately, the model went through the plastic phase and was damaged. This enabled the measurement of displacement and strain that were much higher than those of the safe operating range of the structure. Based on conducted examinations, practical conclusions were drawn relative to the analyzed measurement methods.

show abstract

Load-Displacement Response of Oil Palm Shell Concrete Compressive Test Using Digital Image Correlation

Rahman

Prakoso

Tjahjono

et al. 2020

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Study of compressive strength of oil palm shell (OPS) concrete has been conducted by varying the content of admixture of silica fume and fly ash to increase concrete strength. Digital Image Correlation (DIC) was used as a tool to capture the physical change of concrete cube during the test which can be converted to load-displacement response by using open source sotware, Ncorr. It is evident that DIC can be carried out with ordinary camera DSLR which reveal from test result. Poison’s ratio as a ratio between lateral and vertical displacement is succesly obtained. The value are between 0.2096 to 0.2264. Concrete strength improved by 30% to 43% by adding the admixture, silica fume and fly ash.

show abstract

Error Analysis of Displacement Gradients via Finite Element Approximation of Digital Image Correlation System

Cited by 4 publications

References 15 publications

Behavior of FRP-strengthened RC elements subjected to pure shear

Behavior of FRP-strengthened RC elements subjected to pure shear

Effectiveness of Selected Strain and Displacement Measurement Techniques in Civil Engineering

Load-Displacement Response of Oil Palm Shell Concrete Compressive Test Using Digital Image Correlation

Contact Info

Product

Resources

About