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Information × Registration Number 0216U006592, 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 20-04-2016 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 The density of areas with classic fatigue fissures on the background of residual pseudo- fissures relief and the size and density of carbides, which exuded along the grain boundaries, could be also accepted as informative fractografic features of 15H1M1F steel degradation at the threshold crack growth rate, besides the quantity of intergrain facets on the fracture. An approach to building of volume model of some relief surface material by one image is proposed. The advantage of the method is the lack of need to build a series of images with different levels of focus. It is proposed to use local contrasts or fractal dimensions for focus level estimation. The computer simulation of this method using fractografic image of 12H1MF steel is done. The research directions that allow using three-dimensional model of relief for metric measurements are also denoted. The algorithm for pitting inner surface reconstruction is proposed and it's accuracy is calculated. The errors of pitting depth determining induced by parameters of Lambert light reflection model deviation from actual values are analytically deduced. Analytical expressions are received and the method for calculating of light reflection through a series of images models' parameters is proposed. Product Description popup.authors Іванюк Віталій Григорович Івасенко Ірина Богданівна Бабій Леонтій Омелянович Боцян Володимир Володимирович Журавель Ігор Михайлович Косаревич Ростислав Ярославович Кречковська Галина Василівна Лисак Юрій Васильович Мандзій Теодор Стефанович Марков Андрій Дмитрович Никифорчин Григорій Миколайович Обух Юрій Володимирович Рабик Богдан Іванович Русин Богдан Павлович Свірська Леся Миколаївна Студент Олександра Зіновіївна popup.nrat_date 2020-04-02 Close