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Information × Registration Number 0223U000309, 0120U101788 , R & D reports Title Research and development of electrophysical methods and means of detecting metal defects of cylindrical structures with covers popup.stage_title Head Dzhala Roman М., Доктор технічних наук Registration Date 06-01-2023 Organization Karpenko Physico-Mechanical Institute of NASU popup.description2  The method for non-contact inspections of the anti-corrosion protection of underground pipelines (UP) is proposed. A mathematical model for the magnetic field of a cylinder with defects is developed; the calculations show the possibility of detecting defects in the UP metal. A mathematical model of relationships between the parameters of stressed metal with a defect, corrosion current at the crack tip, cathodic protection potential, overvoltage of the anodic reaction, temperature changes was developed; the correlation between the anodic current, temperature distribution and stress-corrosion damages was revealed; the resource of the pipeline was estimated taking into account the nonlinearity of corrosion strength criteria. Signatures for signals of diffuse light reflection by surfaces with randomly placed defects were established to estimate their average size; a data set was synthesized for training machine learning algorithms for defects classification. Product Description popup.authors Ivasiv Igor Bogdanovych Verbenetz Bohdan Ya. Dzhala Vasylʹ R. Dzhala Roman Mykhailovych Melnyk Marjan I. Oseshnyuk Maryna O Rohiv Nazar V. Semeh`uk Oksana M. Chervinka Liudmyla Ye. Chervinka Orest O. Yuzevych Volodymyr M. popup.nrat_date 2023-01-06 Close