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Information × Registration Number 0216U003987, 0113U003496 , R & D reports Title Prediction of viscous failure in the zone of pipelines defects of thinning of the walls by the mechanism of pore formation popup.stage_title Head Velykoivanenko Olena Andriivna, Registration Date 11-03-2016 Organization E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine popup.description2 The basic assumptions of the physical model of the stress-strain state and then ductile fracture to determine the characteristics of the limit of the internal pressure in welded pipeline elements and pressure vessels to the identified non-continuous three-dimensional metal. The basis of the continuum model of dilated laid phased tracking the status of micro- and macrodamages construction material during welding and loading internal pressure and external force moments fold. Methodological approaches mathematical description and computer implementation of physical models. It is shown that the best criterion for determining a limiting condition of pipeline elements with surface defects is the emergence of macro-scale discontinuities. A separate question was to determine the influence of the mounting and repair welding the damaged weld metal welded construction and operation. Proposed criteria approach to the determination of the degree of porosity of various nature, generated during welding. The influence of the technological parameters of welding and material characteristics on the degree of damage of the welded structure. For example, a defect in local thinning of the district assembly seam investigated the specificity of interaction of geometric anomalies physical inhomogeneity of the stress-strain state of the structures and damaged caused by welding. The stress-strain state of the pipeline element revealed multifocal damage after partial repair welding. Product Description popup.authors Козлітіна Світлана Семенівна Міленін Олексій Сергійович Махненко Олег Володимирович Півторак Ніна Іванівна Розинка Галина Пилипівна Саприкіна Галина Юріївна Царінний Олексій Борисович Царинний Борис Володимирович Шекера Василь Михайлович popup.nrat_date 2020-04-02 Close