Use of the digital image correlation and acoustic emission technique to study the effect of structural size on cracking of reinforced concrete

Alam, Syed Yasir; Loukili, Ahmed; Grondin, Frédéric; Rozière, Emmanuel

doi:10.1016/j.engfracmech.2015.06.038

Cited by 118 publications

(52 citation statements)

References 32 publications

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“…In first paper by S.Y. Alam, A. Loukili, F. Grondin, E. Rozière, June 2015, "Use of the digital image correlation and acoustic emission technique to study the effect of structural size on cracking of reinforced concrete" [12] an experimental investigation is performed by employing two experimental techniques simultaneously i.e. digital image correlation and acoustic emission to study the degradation of reinforced concrete beams.…”

Section: Literature Surveymentioning

confidence: 99%

Experimental Determination of Fracture Energy by RILEM Method

Uday¹

2017

THE IJES

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Section: Literature Surveymentioning

confidence: 99%

Experimental Determination of Fracture Energy by RILEM Method

Uday¹

2017

THE IJES

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“…Recently, some studies have been made in which no additional pattern was used on the concrete surface. Alam et al used Digital Image Correlation (DIC) together to an acoustic emission technique to measure crack opening and spacing in beams with different cross section under bending moment. Kim el al .…”

Section: Introductionmentioning

confidence: 99%

A method to measure small local strains in concrete surfaces using its natural texture and image cross‐correlation

Espinosa

Mas

2019

Struct Control Health Monit

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Summary This paper proposes a method to measure the displacement of every point on a concrete surface using its original surface texture and digital image cross‐correlation (DICC). The main advantage is that it does not need to add or attach any particular pattern or target to the surface, contrary to the current methods based in DICC. The method is tested in a concrete probe during loading–unloading cycles under its yield limit, with no cracks appearing in the surface. The total surface of the probe was tessellated in optimal local areas, and DICC with peak refinement was performed on each local area. In order to find the optimal size for that areas, we propose here a method based on the image local entropy. We show that, with natural nonoptimized textures, the proposed technique allows to locally measure the concrete deformation due to small strains (<0.1%) with an error below 50 με. Although results are more inaccurate than those obtained by a strain gauge, our method is able to noninvasively determine the strains in a concrete surface under small loads with reasonable accuracy, thus allowing its use in unreachable or historical structures where no attachment or target painting is possible.

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“…(b) Size of specimens-Reinforced beam specimens of three sizes of scales are made to investigate the size effect of concrete beams when the bending test is introduced using digital image correlation (DIC) and AE. In large beams, tensile micro-cracking is observed in the initial and intermediate level of loadings, while shear cracking is evident at the final stages [25]. In another study, zoning is used to explore the behavior of mode of failure near the support and at the midspan of a long beam.…”

Section: Factors Affecting Acoustic Emission Testsmentioning

confidence: 99%

Monitoring Damage Using Acoustic Emission Source Location and Computational Geometry in Reinforced Concrete Beams

2018

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Non-destructive testing in reinforced concrete (RC) for damage detection is still limited to date. In monitoring the damage in RC, 18 beam specimens with varying water cement ratios and reinforcements were casted and tested using a four-point bending test. Repeated step loads were designed and at each step load acoustic emission (AE) signals were recorded and processed to obtain the acoustic emission source location (AESL). Computational geometry using a convex hull algorithm was used to determine the maximum volume formed by the AESL inside the concrete beam in relation to the load applied. The convex hull volume (CHV) showed good relation to the damage encountered until 60% of the ultimate load at the midspan was reached, where compression in the concrete occurred. The changes in CHV from 20 to 40% and 20 to 60% load were five and 13 times from CHV of 20% load for all beams, respectively. This indicated that the analysis in three dimensions using CHV was sensitive to damage. In addition, a high water-cement ratio exhibited higher CHV formation compared to a lower water-cement ratio due to its ductility where the movement of AESL becomes wider.

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Use of the digital image correlation and acoustic emission technique to study the effect of structural size on cracking of reinforced concrete

Cited by 118 publications

References 32 publications

Experimental Determination of Fracture Energy by RILEM Method

Experimental Determination of Fracture Energy by RILEM Method

A method to measure small local strains in concrete surfaces using its natural texture and image cross‐correlation

Monitoring Damage Using Acoustic Emission Source Location and Computational Geometry in Reinforced Concrete Beams

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