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Information × Registration Number 0213U000915, 0112U002779 , R & D reports Title Development of computerized methods for quantitative analysis of elements and structure of pipe steels caused by their degradation popup.stage_title Head Vorobel Roman, Registration Date 26-04-2013 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 Discovered gradient changes in the characteristics of strength, ductility and fracture toughness of static across the pipe wall and anisotropy for fracture in diametric and axial sections operated pipe. Mechanical metal perish identified on axial samples sensitive to changes in its technical condition from operation compared with tangential samples, because only they could fix the exhaustion of plasticity steel in the extended zone dying parohonu. The lowest resistance to crack growth recorded by tangential samples in the extended zone of dying in a neighborhood outside surface of the pipe, and the axial - compressed in the vicinity of the inner surface of the pipe. A method for multi-threshold segmentation fractographic images, which unlike such approaches to image segmentation as building objects from the original areas, the allocation of their boundaries, allows to divide the image into coherent fracture surface area, and then analyze and determine their quantitative characteristics. The method of binarization of gray-scale images using the optimal threshold, which is calculated using the correlation function. On the effectiveness of the method to other known methods for global binarization, including the method of Otsu. This method is useful in particular when analyzing metallographic and factual images when calculating their fractal dimensions, Edges, geometric analysis of grain boundaries. Found that the calculation of the average diameter of the metal grains according to GOST 5639-82 must use a correction factor that will enable to increase the accuracy of calculations performed. Product Description popup.authors Іванюк Віталій Григорович Івасенко Ірина Богданівна Бабій Леонтій Омелянович Боцян Володимир Володимирович Журавель Ігор Михайлович Капшій Олег Вірославович Косаревич Ростислав Ярославович Кречковська Галина Василівна Мандзій Теодор Стефанович Марков Андрій Дмитрович Никифорчин Григорій Миколайович Рабик Богдан Іванович Русин Богдан Павлович Свірська Леся Миколаївна Студент Олександра Зіновіївна popup.nrat_date 2020-04-02 Close