Hybrid Digital Image Correlation/Thermographic System for Displacement and Defects in Civil Engineering Structures Observation

Kujawińska, Małgorzata; Bukalska, M.; Dymny, Grzegorz

doi:10.21611/qirt.2010.157

Cited by 8 publications

(6 citation statements)

References 2 publications

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“…They were mounted on a single rack, as shown in Fig. 1, with a 500 mm distance, facing the same direction, with 30 degree angle between their optical axis [11]. Next, the thermal camera ,,V60" (640x480 pixels, spectral range 8-14 µm [14]) was placed directly in the middle.…”

Section: Setup Componentsmentioning

confidence: 99%

“…A few initial examples and possible future applications of the method, namely: liquid tank storing hot water, plexiglas board under hot air pressure and human skin movement during muscle contraction are presented below. First works in IMIF on 3D DIC IR system were done in year 2010 [11]. Proposed setup had the same construction as the one described in this paper, but no calibration was introduced.…”

Section: Introductionmentioning

confidence: 99%

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Combining Digital Image Correlation and Thermal Measurements

Rutkowski

Malesa

Kujawińska

2015

SSP

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In this paper we present a calibration method, which enables a combining of 3D Digital Image Correlation and termographic systems for simultaneous measurements of displacements, strains and temperature. It concerns a model of a calibration target, that works for visible and infrared light spectrum and calibration method. The working system was applied for three interesting cases: monitoring of a tank filled with liquid, a heated plexi board and a human arm during muscle contraction.

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Section: Setup Componentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Combining Digital Image Correlation and Thermal Measurements

Rutkowski

Malesa

Kujawińska

2015

SSP

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“…The cracks were detected as places in which the correlation coefficient decreased its value abruptly. Kujawin´ska et al 39 proposed a hybrid, distributed system dedicated to construction monitoring. The images were acquired by two types of optical sensors: one-or two-camera systems using digital image correlation as a measurement technique and an infrared camera.…”

Section: In 2004mentioning

confidence: 99%

Monitoring of a civil structure’s state based on noncontact measurements

Kohut

Holak

Uhl

et al. 2013

Structural Health Monitoring

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In this article, the comparison of two noncontact measurement methods dedicated to civil engineering structures' state examination is presented. The vision-based method computes the displacement field of the analyzed structure by means of the digital image correlation coefficient. The system consists of one or more high-resolution digital cameras mounted on a head or on portable tripods. The developed methodology and created software application embedded in an MS-Windows operating system are presented. The second system measures the deflection of the structures by means of a radar interferometer. In both cases, it is possible to measure many points on the structure simultaneously. This article presents a comparison of the displacement field measurement performed on a field setup, as well as the span of a steel bridge designed for tram traffic. Both systems are described, with special attention given to their application in measurements of civil engineering structures. This article demonstrates a preliminary test performed to verify both of the noncontact systems in relation to high-accuracy measurement devices, the precise surveying level, and the electronic dial indicator of displacement. The experiment was designed intentionally to simulate the geometric conditions of the real structure, but the displacement values were generated and controlled by the operator. As a key study, a steel viaduct subjected to an operational load was measured, as a type of structure for which the observation is required in terms of structural health monitoring. It was subjected to the operational load caused by tram traffic. Both examined systems were applied. The accuracy analysis of both systems was investigated, and the obtained results were discussed.

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“…2) and may include important information about a structure integrity (defects, cracks), thermal insulation, moisture detection and other object features. Below we will describe in more details the system based on 2D DIC/TNDT which utilizes the visual detector built into thermovision camera so by applying a single device the user may get simultaneously information about in-plane displacement and emissivity of an engineering structure [6]. The thermographic camera in which the hybrid method has been implemented is VIGOcam v60.…”

Section: Hybrid Dic/thermographic Sensormentioning

confidence: 99%

Hierarchical, multitasks optical system for health monitoring of civil engineering structures

et al. 2010

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In this paper a distributed intelligent system for civil engineering structures on-line measurement, remote monitoring, and data archiving is presented. The system consists of a set of full-field optical displacement sensors connected to a controlling server. The server conducts measurements according to a list of scheduled tasks and stores the primary data or initial results in a remote centralized database. The description of an exemplary set of full-field sensors including IP and thermovision camera, 2D and 3D digital image correlation systems, and grating interferometry based extensometers is provided. Three different measurement tasks performed by means of this systems are presented in details.

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Hybrid Digital Image Correlation/Thermographic System for Displacement and Defects in Civil Engineering Structures Observation

Cited by 8 publications

References 2 publications

Combining Digital Image Correlation and Thermal Measurements

Combining Digital Image Correlation and Thermal Measurements

Monitoring of a civil structure’s state based on noncontact measurements

Hierarchical, multitasks optical system for health monitoring of civil engineering structures

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