The effect of random surface topography height on fretting in dry gross slip conditions
PBN-AR
Instytucja
Instytut Technologii Eksploatacji
Informacje podstawowe
Główny język publikacji
angielski
Czasopismo
Proceedings of the Institution of Mechanical Engineers Part J. Journal of Engineering Tribology
ISSN
1350-6501
EISSN
Wydawca
Institution of Mechanical Engineers
DOI
Rok publikacji
2014
Numer zeszytu
12
Strony od-do
1374-1391
Numer tomu
228
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Autorzy
(liczba autorów: 4)
Pozostali autorzy
+ 3
Słowa kluczowe
angielski
Fretting wear; surface topography; friction force; wear resistance
Streszczenia
Język
angielski
Treść
This paper describes the tribological effect of surface topography on friction and wear under dry fretting regime of a point contact. Experiments were made using SRV4 ball-on-disc tribotester. 100Cr6 sphere of 64 HRC (Rockwell method, scale C) hardness co-acted with a disc made of 42CrMo4 steel with hardness of 40 HRC. Fretting tests were carried out under dry gross slip conditions. The diameter of ball was 10 mm. During tests, normal load was kept constant at P = 50 N within the contact. Duration of each test was 15 min. Tests were performed in 26 ℃ temperature in the chamber at 39–43% of relative humidity. Displacement amplitude was 0.1 mm (stroke was 0.2 mm) with frequency of 20 Hz. The disc samples had different textures obtained after one process (grinding, vapor blasting, or polishing) and two process (grinding or vapor blasting followed by lapping). During tests, the friction force was monitored as a function of time. Wear of disks and balls was measured after the test using white light interferometer. Surface roughness height of discs, determined by the Sq parameter was in the range: 0.01–4.5 µm. It was found that initial surface roughness height had a significant influence on friction and wear in dry gross slip conditions. For rougher disc surfaces, the friction force in initial test stage and wear of co-acting parts were higher.
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System-identifier
PX-5698bad9810641ecf91a3222
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