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Information × Registration Number 0217U000208, 0114U004007 , R & D reports Title The development of information technology diagnostics of structural elements affected by corrosive ulcers popup.stage_title Head Rusyn Bogdan, Доктор технічних наук Registration Date 31-01-2017 Organization Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine popup.description2 Object of study - Modelling of processes piting damage of the surfaces of metals and alloys . Purpose - to improve the accuracy of the modeling method of growth and development of damage to metal surfaces and alloys due to the ravages of corrosion based on the use of cellular automata and images point to elucidate the influence of temperature and corrosive environment to speed the flow and depth of corrosion defects. The scientific and practical results: - The theory of point processes for technical diagnostics of continuous service affected, corrosion piting, and a new approach to modeling of corrosion defects using cellular automata; - Received a new mathematical model of piting defects by cellular automata, which makes it possible to predict the diameter and depth of the defects, depending on initial conditions such as aggressive environment, temperature and duration of the course corrosion and increase the fidelity physics processes; - Improved method of cellular automata to reconstruct the probable piting damage of the surfaces of metals and alloys, which unlike known, considered the probability of transition to a state of repassivation individual defects and simulation of pitynha carried out provided the sample set in the center of the lattice cellular automaton before playing corrosion process; - Based on a single approach - the study of the characteristics of random point processes - developed image analysis methods metallographic systems for technical diagnostics. All stages of image segmentation and modeling of surface defects based on the use of random point fields: their formation based on image, identifying morphological characteristics of structural elements, setting parameters models; - The proposed new method of presentation metallographic grayscale image as a superposition of random point fields that allowed interpreted as a single object composition characteristics of different luminance image areas that correspond heterogeneity of the surface material. - First suggested to determine the existence and type of interaction between local corrosion damage of steels based on stochastic model parameter estimates marked a random point process with odd function interaction in the form Fiksel built for metallographic image and piting damaged surface. - Proposed stochastic model of Pitting corrosion of steel 08H18N10T based on Gibbs random marked point processes, describing the processes of birth, growth and spread of local corrosion damage on the surface and in contrast to the known models take into account the interaction between them. Product Description popup.authors Іванюк Віталій Григорович Варецький Ярема Юрійович Капшій Олег Вірославович Косаревич Ростислав Ярославович Лисак Юрій Васильвич Луцик Олексій Андрійович Обух Юрій Васильович Торська Роксана Володимирівна popup.nrat_date 2020-04-02 Close