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Information × Registration Number 0221U104965, 0116U004927 , R & D reports Title Improving the methods and technologies of recovery, increasing durability and diagnostics of surface of elements of machines and connections popup.stage_title Head Yevtifieiev Serhii L., Кандидат технічних наук Registration Date 28-04-2021 Organization Odessa National Polytechnic University popup.description2 The object of research - technologies for creating new work surfaces of machine parts and technologies for determining operational defects The purpose of the work is to develop theoretical foundations and conduct experimental research on the creation of new working surfaces of machine parts by boring, spraying and research of methods for determining their operational defects. The research method is the introduction of methods of dislocation theory, thermodynamics of alloys, metallographic analysis. New scientific data have been obtained on the development of several alloys to increase the service life of friction pairs, which wear out quickly during operation. Based on these developments, a multi-component "antifriction alloy based on Fe-Si-Cu-C" was proposed. A set of studies of the causes of destruction of large diameter shafts has been performed. The method was improved and improved, and a system of laboratory control and diagnosis of some of the surface defects of butt welds, parts (for example, control of surface cracks) and cutting parts of tools (for example, cutters and drills) using STZ was developed. Algorithms for processing digital images of a number of surface defects, named above control objects, are developed, sets of their signs and recognition (diagnosis) of classes of defects are received. Appropriate classifiers are proposed. An analytical study of the process of grinding a multilayer heat-protective coating ZrO2Y2O3 on a metal substrate with an Elbor circle was performed. The regularities of formation of physical and mechanical characteristics of the sprayed coating in the process of finishing and the conditions of the strength of the contact of the coating and the substrate on the basis of the coating are determined. A study of the improvement of composite powder materials for the creation of wear-resistant surfaces of machine parts and mechanisms by the gas-thermal method was developed and carried out. The development of a simple, efficient an  Product Description popup.authors Derevianchenko Oleksandr H Klymenko Nataliia М. Lebediev Volodymyr H. Sinkovskyi Anatolii S. Stasiuk Kateryna V. Frolenkova Olha V. Chumachenko Tetiana V. popup.nrat_date 2021-04-28 Close