Active infrared thermographic inspection technique for elevated concrete structures using remote heating system

Kurita, Koichi; Oyado, Michiaki; Tanaka, Hisashi; Tottori, Seiichi

doi:10.1016/j.infrared.2009.07.010

Cited by 30 publications

(17 citation statements)

References 19 publications

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“…To overcome the issues with the accessibility of the zone which has to be inspected, Kurita et al [41] proposed a simple image processing procedure that was used to obtain high-contrast IRT images of the elevated reinforced concrete railway structures. A remote heating system consisting of a 6 kW air-cooled xenon arc lamp and a scanner system was developed to detect hidden defects in elevated concrete structures without the need for an aerial truck or scaffolding.…”

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confidence: 99%

“…In the method by Kurita et al [41], irradiation and the generation of the thermal image take place simultaneously, which increases the speed of operation in comparison to conventional active scheme where the observation of the IR image takes place after the irradiation. The hot spot due to thermal excitation is directly observed by an IR camera, so the infrared images display a high-temperature hot spot caused by the scanning beam which creates a disturbance.…”

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confidence: 99%

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Review of Active IR Thermography for Detection and Characterization of Defects in Reinforced Concrete

2016

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Active thermography methods enable structural investigations of reinforced concrete elements taking into account many different testing problems. The goal of this review is to provide an overview on the state-of-the-art regarding the use of active infrared thermography (IRT) for detection and characterization of defects in reinforced concrete. The paper will provide the physical background, equipment being used, as well as post-processing methods that are used to analyse sequences of thermograms. This work also presents the fields of applicability of IRT with a focus on the aspects related to reinforced concrete structures, as well as the advantages, limitations and potential sources of errors of IRT employment. Additionally previous non-destructive testing (NDT) studies that employed thermography techniques with natural excitation are briefly presented. A review of the future trends of thermal imaging are also included in this work. It can be concluded that while IRT is a useful tool for the characterisation of defects in the building sector, there is great prospect for the development of more advanced, effective and accurate approaches that will employ a combination of thermography approaches.

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Review of Active IR Thermography for Detection and Characterization of Defects in Reinforced Concrete

2016

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“…Thus, the defect turns into the heat source and can be directly detected on the thermal image. The active thermographic monitoring methods are used for the detection of cracks in ceramic (Kurita et al 2009), metallic (Kordatos et al 2012) and composite materials (Fernandes et al 2015;Mendioroz et al 2017), delamination failure in composite materials (Fernandes et al 2015), welding inspection (Schlichting et al 2012). …”

Section: Acoustic Emission Monitoringmentioning

confidence: 99%

Computational monitoring in real time: review of methods and applications

Dyskin

Başarır

Doherty

et al. 2018

Geomech. Geophys. Geo-energ. Geo-resour.

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Continuous monitoring of mechanical parameters determining the state of natural and manmade systems is essential in a wide range of engineering disciplines from mechanical to civil and geotechnical engineering. To be effective, the monitoring response time needs to be commensurate with the characteristic time of variation of the processes being monitored e.g. from seconds as for example in some machinery, to weeks and months for mining excavations and years in the case of structures. The methods of measurement can therefore differ significantly for different applications. In spite of this, the methods of information processing-the computational monitoring-have considerable commonality. This review focuses on the methods of computational monitoring in solid and structural mechanics problems in different engineering applications. The traditional methods of monitoring are reviewed along with the corresponding computational and measurement methods. The basic principles of the computational monitoring in real time are established.

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“…Passive thermography by its nature is scanning the thermal radiation from the surface of the object of research with an infrared camera. It supplies information about the surface temperature of the object in thermal balance [11,16].…”

Section: Algorithm 2 Fault Area Detection Algorithmmentioning

confidence: 99%

Image Processing for Technological Diagnostics of Metallurgical Facilities

Doukovska¹,

Petkov²,

Mihailov³

et al. 2012

Cybernetics and Information Technologies

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The paper presents an overview of the image-processing techniques. The set of basic theoretical instruments includes methods of mathematical analysis, linear algebra, probability theory and mathematical statistics, theory of digital processing of one-dimensional and multidimensional signals, wavelet-transforms and theory of information. This paper describes a methodology that aims to detect and diagnose faults, using thermographs approaches for the digital image processing technique.

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Active infrared thermographic inspection technique for elevated concrete structures using remote heating system

Cited by 30 publications

References 19 publications

Review of Active IR Thermography for Detection and Characterization of Defects in Reinforced Concrete

Review of Active IR Thermography for Detection and Characterization of Defects in Reinforced Concrete

Computational monitoring in real time: review of methods and applications

Image Processing for Technological Diagnostics of Metallurgical Facilities

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