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Introduction to Mechatronic Systems
Published in Bogdan M. Wilamowski, J. David Irwin, Control and Mechatronics, 2018
(Bzymek et al. 2007) provided the results of the applications of these two types of image processing. They described the methods of image processing applied in a vision system, which consists of two CCD and one infrared camera, for assessing the quality of welded joints. The base of elaborated approaches to joint assessment is a set of images taken in infrared and visible light during the welding process. Images taken in visible light are sources of information about outer conditions of the joint, while thermograms help us obtain information concerning the joint interior. (Fidali 2007) presented the results of the application of selected methods of the thermogram analysis. Thermo-vision finds more often its application in machinery and apparatus diagnostics. A thermographic camera provides the noncontact simultaneous temperature measurements in many points of an object and records them in the form of a thermographic image, which can be a source of diagnostic information.
A Hybrid Masonry and Steel Mirror-Type Vault with Lunettes: Survey and Structural Analysis
Published in International Journal of Architectural Heritage, 2020
Paola Condoleo, Antonia Gobbo, Alberto Taliercio
Thermographic tests were carried out at the extrados of the vault, in order to get the correct arrangement of the hollow bricks, which deeply affects the mechanical behaviour of the vault. The layout was partially hidden by a thin plaster layer at both sides (intrados and extrados); also, a thick deposit of debris initially covered the extrados of the vault (see, e.g., Figure 7). In these conditions, thermography turns out to be a suitable non-destructive technique to characterize the masonry layout (Cantini et al. 2016). Indeed, thermography allows the surface layers of any structure to be investigated, without any need of a direct contact between the device and the observed area. The technique is based on recording the temperature distribution over a surface by a thermographic camera designed to measure the infrared radiation emitted from any material. The infrared camera collects thermographic images of the monitored area during cooling, following a passive or active heating. In the present case, as tests were performed in June, passive thermography turned out to be the correct method. The thermo-camera used for the tests was an Avio-NEC TVS 500 model, equipped by a vanadium oxide micro bolometric sensor providing a resolution of 320 × 240 pixels.
Macro- and micro-level studies using Urban Heat Islands to simulate effects of greening, building materials and other mitigating factors in Mumbai city
Published in Architectural Science Review, 2019
Thermal images of various areas in Mumbai are captured and with the help of IR Analyser software the analysis of the images is carried out to know the temperature on different surfaces. Most of the surfaces in the city are concrete surfaces in urban areas. A thermographic camera or infrared camera is a device that forms an image using infrared radiation, similar to a common camera that forms an image using visible light (Figures 23–25).