Some problems of slide bearing material fatigue evaluation

• Autorzy: Sikora J. , Kłopocki J. , Majewski W. , Kurzych K.
• Języki publikacji: EN

Abstrakty

EN

A slide bearing alloy resistance against fatigue failures have been investigated for three different lubricants, different heat loadings and different stress ratio K values. The research methods and data handling procedures for determination of particular parameter effects on fatigue strength have been described and analysed for experiments that were set and performed in laboratory tester SKMR-2. Main and interaction effects of lubricant and stress ratio factors on bearing material fatigue strength have been analysed. Design scheme of the SKMR-2 head unit, Standard tested half-bearing, fatigue failures on the surface of the specimen, cross-section through the damaged surface layer of the specimen, fatigue limit stress amplitude vs. temperature and kind of oil, main effect of stress ratio, main effects of temperature and oil are illustrated in the paper. Main conclusions are cover in statements that fatigue strength of the bearing material is affected, to the highest degree, by the mechanical stress value and stress ratio and resistance to the fatigue cracks is being reduced for higher tensional stress, increase in temperature is resulting in decreasing of the fatigue strength rating values, fatigue strength of the slide layer is considerably dependent on the type of the used lubricant interactions of the type of the lubricants, their temperatures, loading stress ratio have been noticed.

Słowa kluczowe

EN

bearings; tribology; bearing testing; fatigue investigations; fatigue performance

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2007
• Tom: Vol. 14, No. 4
• Strony: 427--432
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Sikora J.

autor

Kłopocki J.

autor

Majewski W.

autor

Kurzych K.

• Technical University of Gdańsk Mechanical Engineering Faculty Narutowicza 11/12, 80-952 Gdańsk, Poland tel. [phone], fax [phone],

Bibliografia

• [1] ISO 7905/1-4; 1995: Plain bearings – Bearing fatigue-Part I: Plain bearings is test rig and in applications under conditions of hydrodynamic lubrication.
• [2] Sikora, J., K..opocki, J., Majewski, W., Test rig for metallic plain strips of bearing material fatigue investigations - design and evaluation of properties, Journal of KONES’98, Vol.5, s. 274-279, 1998.
• [3] Sikora, J., Studia nad metodyk.. badania wytrzyma..o..ci zm..czeniowej ..o..ysk ..lizgowych poprzecznych, Zesz. Nauk. Polit. Gdańskiej, nr 534, Mechanika nr 74, 1996.
• [4] Kurzych, K., Badania wytrzymałości zmęczeniowej łożyskowych warstw ślizgowych za pomocą specjalistycznego testera, Praca doktorska, Politechnika Gdańska, 2007.