Friction, wear and surface damage mechanisms of pneumatic clutch actuators
2013 (English)In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 305, no 1-2, 36-44 p.Article in journal (Refereed) Published
Wear and surface degradation mechanisms of a pneumatic clutch actuator have been studied. The applied test method simulates the sliding contact of an anodised aluminium surface against a rubber lip seal and a PTFE guiding ring. The influences of contact load, temperature and particle contamination on wear mechanisms and friction were investigated. A controlled amount of lubrication was applied; both pure silicone grease and silicone grease mixed with standard dust particles were used.
The wear occurring at the tests with only silicone grease is similar, but on a lower scale, to the wear at the tests with a mixture of silicone grease and standard dust. The polishing of the anodised aluminium is increased with increasing temperature or increasing load. The wear of the anodised aluminium surface is more prominent when sliding against the PTFE guiding ring than when sliding against the lip seal. The wear of the guiding ring increases with increasing load or increasing temperature. The lip seal is worn but at 140 °C (with silicone grease or with a mixture of silicone grease and standard dust) or at increased load (with a mixture of silicone grease and standard dust) a thick layer of adhered material is formed.
Place, publisher, year, edition, pages
2013. Vol. 305, no 1-2, 36-44 p.
Research subject Engineering Science with specialization in Materials Science
IdentifiersURN: urn:nbn:se:uu:diva-195327DOI: 10.1016/j.wear.2013.05.006OAI: oai:DiVA.org:uu-195327DiVA: diva2:607548