2022
DOI: 10.3390/s22145400
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Experimental Study and FEM Simulations for Detection of Rebars in Concrete Slabs by Coplanar Capacitive Sensing Technique

Abstract: In the present study, a relatively novel non-destructive testing (NDT) method called the coplanar capacitive sensing technique was applied in order to detect different sizes of rebars in a reinforced concrete (RC) structure. This technique effectively detects changes in the dielectric properties during scanning in various sections of concrete with and without rebars. Numerical simulations were carried out by three-dimensional (3D) finite element modelling (FEM) in COMSOL Multiphysics software to analyse the im… Show more

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Cited by 7 publications
(3 citation statements)
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“…By detecting the local variation of the dielectric properties of the materials under testing, capacitive sensing techniques have been used for structural monitoring of the concrete slab retrofitted with composites in Nassr and El-Dakhakhni (2009) and Nassr and El-Dakhakhni (2011). A planar capacitive sensor is presented by Mamoudan et al (2022) to detect rebars with different sizes in a reinforced concrete structure. In Matiss (2014), nondestructive measurement of dielectric permittivity and thickness of dielectric plates and shells is carried out with a planar capacitive sensor.…”
Section: Introductionmentioning
confidence: 99%
“…By detecting the local variation of the dielectric properties of the materials under testing, capacitive sensing techniques have been used for structural monitoring of the concrete slab retrofitted with composites in Nassr and El-Dakhakhni (2009) and Nassr and El-Dakhakhni (2011). A planar capacitive sensor is presented by Mamoudan et al (2022) to detect rebars with different sizes in a reinforced concrete structure. In Matiss (2014), nondestructive measurement of dielectric permittivity and thickness of dielectric plates and shells is carried out with a planar capacitive sensor.…”
Section: Introductionmentioning
confidence: 99%
“…The capacitive detection method is an emerging technology that can achieve non-contact measurements and good stability. It is extensively utilized in a variety of applications, including pressure detection, non-destructive testing, and humidity detection [14][15][16][17][18][19][20]. Due to its excellent detection accuracy and resistance to environmental deterioration, capacitive sensors have recently been applied in the field of crop sowing detection.…”
Section: Introductionmentioning
confidence: 99%
“…The horizontal-type sensor, also called a coplanar-type sensor, contains two electrodes placed on a substrate, unlike with the parallel-plate type (Figure 1b). Due to its structural characteristics, it is widely used for physical measurements as well as chemical and biological detection through binding receptors to electrodes, from simple structures, such as triangles and squares, to efficient structures, such as swirls and combs [18][19][20][21][22][23]. Among them, the comb-shaped structure, also called an interdigitated (ID) pattern, is the most used because it is a simple structure with maximal efficiency in the same area (Figure 1c) [24].…”
Section: Introductionmentioning
confidence: 99%