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Detection of reflecting planes in ultrasonic tomography of concrete building structures
In recent years, ultrasonic pulse-echo tomography has been widely used to visualize internal structures, detect structural inhomogeneities inside a product, and determine the dimensions of concrete products. The most frequently encountered inhomogeneities are fillers (gravel), steel reinforcing bars, and flaws of the air-cavity and crack types. In most ultrasonic tomographs, phased antenna arrays (PAAs) and the SAFT technique are used and make it possible to determine the spatial coordinates of spherical acoustic inhomogeneities using the ultrasonic-signal focusing (USF) algorithm. The features of algorithms for identifying the configurations of reflecting objects (points, spheres, planes, cylinders, etc.) in ultrasonic tomography of complexly structured concrete products are considered. The results of a practical solution to the problem of recognizing a pattern and deter mining the coordinates of a flat reflector using ultrasonic phased antenna arrays are presented for the example of applying the algorithm of focusing to a plane.
Detection of reflecting planes in ultrasonic tomography of concrete building structures
In recent years, ultrasonic pulse-echo tomography has been widely used to visualize internal structures, detect structural inhomogeneities inside a product, and determine the dimensions of concrete products. The most frequently encountered inhomogeneities are fillers (gravel), steel reinforcing bars, and flaws of the air-cavity and crack types. In most ultrasonic tomographs, phased antenna arrays (PAAs) and the SAFT technique are used and make it possible to determine the spatial coordinates of spherical acoustic inhomogeneities using the ultrasonic-signal focusing (USF) algorithm. The features of algorithms for identifying the configurations of reflecting objects (points, spheres, planes, cylinders, etc.) in ultrasonic tomography of complexly structured concrete products are considered. The results of a practical solution to the problem of recognizing a pattern and deter mining the coordinates of a flat reflector using ultrasonic phased antenna arrays are presented for the example of applying the algorithm of focusing to a plane.
Detection of reflecting planes in ultrasonic tomography of concrete building structures
Nachweis von Reflexionsebenen in der Ultraschalltomographie von Betonbauwerkskomponenten
Kachanov, V.K. (author) / Sokolov, I.V. (author) / Timofeev, D.V. (author) / Turkin, M.V. (author) / Shalimova, E.V. (author)
Russian Journal of Nondestructive Testing ; 46 ; 342-349
2010
8 Seiten, 8 Bilder, 3 Quellen
Article (Journal)
English
Detection of reflecting planes in ultrasonic tomography of concrete building structures
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