Problems of Tribology = Проблеми трибології - 2023 рік

Постійне посилання зібрання

https://elar.khmnu.edu.ua/handle/123456789/13602

Переглянути

Перегляд Problems of Tribology = Проблеми трибології - 2023 рік за Автор "Dykha, O."

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  • Ескіз
    Документ
    Friction and wear of current-transmitting contact elements of electric transport with the use of metal-graphite composite materials
    (Хмельницький національний університет, 2023) Kovtun, O.; Dykha, O.
    The work provides an analysis of research devoted to the problem of manufacturing and operation of current-transmitting elements of electric transport, namely, the durability of contact parts according to operational and tribological characteristics. The work of current-transmitting elements of electric transport consists in the continuous sliding of one element on the surface of another and is accompanied by wear. At the same time, two types of wear are distinguished: mechanical and electrical. It has been established that the correct choice of materials has the greatest impact on reducing friction and wear of electrical contact elements. The basis for this is graphite material, which has the best current-conducting characteristics, but has insufficient strength and wear resistance. Approaches to the creation of materials for electrical contact elements using composite metallographite materials based on copper, aluminum, lead and other materials are analyzed.
  • Ескіз
    Документ
    Vibration diagnostics of machine friction units: analysis of the current state and prospects
    (Хмельницький національний університет, 2023) Lytvynov, O.; Dykha, O.
    Vibration diagnostics makes it possible to detect defects in the friction parts of the machine at the early stages of their development, which provides for the repair or replacement of parts before they fail. In this work, an analysis of modern research on the use of vibration diagnostics in tribology is carried out, which includes aspects: vibration diagnostics in technology and tribology; vibration during friction and wear; vibration assessment methods; theoretical approaches in the analysis and modeling of vibrations. It is noted that an important aspect is the development and implementation of theoretical approaches in the analysis and modeling of vibrations, which allows a deeper understanding of the dynamics of friction and wear. This approach makes it possible to develop accurate and adaptive strategies for maintenance and optimization of tribotechnical parameters. It is shown that vibration diagnostics is not only a tool for detecting malfunctions, but also a key element for ensuring the long-term and efficient functioning of friction units of machines. The effective use of vibration diagnostics can significantly reduce maintenance costs, increase the reliability and productivity of equipment, which becomes an indispensable condition for the effective functioning of modern technical systems.