Перегляд за Автор "Staryi, A. L."

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  • Ескіз
    Документ
    Probabilistic approach to assessing tribotechnical reliability indicators of friction units
    (Хмельницький національний університет, 2025) Dykha, M. O.; Dytyniuk, V. O.; Staryi, A. L.
    The article presents a theoretical and analytical review of the probabilistic approach to assessing the tribotechnical reliability of mechanical systems, in particular friction units. The influence of the random nature of loads and wear on the reliability of machine elements is considered. The feasibility of using distribution functions and probability density functions to describe the wear process is substantiated. Mathematical models are described in detail that allow determining the probability of element failure for given statistical characteristics of the load and permissible wear. Both constant and block load conditions are taken into account. The results of the study can be used in the design and operation of highly reliable tribotechnical systems, as well as for predicting their resource under conditions of operational uncertainty.
  • Ескіз
    Документ
    Restoration and wear resistance of electric transport sliding contacts
    (Хмельницький національний університет, 2024) Kovtun, O. S.; Dytyniuk, V. O.; Staryi, A. L.; Fasolia, V. O.
    The electrical contact insert of the current-carrying suspension of the electric vehicle belongs to the fastwearing elements that require frequent replacement and attention to ensure standard performance. The purpose of this study was to develop a technology for manufacturing graphite-filled electrical contact inserts from waste materials and by modifying the composition of the composite. As a result of difficult operating conditions, coal current collector inserts of electric transport are subject to considerable wear. The causes of increased wear are electrocorrosion in contact with the conductor under current, abrasive wear from sliding on the wire with increased dustiness and air humidity. The technological process of manufacturing graphite current-collecting inserts from used graphite components is proposed. To prove the functionality of the restored current-collecting inserts, the strength, electrical conductivity and tribological characteristics of the material were tested. The results of experimental tests showed a slight decrease in material hardness and an increase in electrical resistance within acceptable limits. Bench wear tests showed improved tribological properties of the restorative insert material with the addition of copper powder.