High frequency circular translation pin-on-disc wear testing of UHMWPE using a ball-on-flat contact along a hypotrochoidal track

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorSaikko, Vesa
dc.contributor.departmentDepartment of Mechanical Engineering
dc.date.accessioned2017-05-31T05:58:00Z
dc.date.available2017-05-31T05:58:00Z
dc.date.embargoinfo:eu-repo/date/embargoEnd/2019-03-27
dc.date.issued2017-07-01
dc.description.abstractTo intensify experimental research within the field of orthopaedic tribology, a three-station, dual motion, high frequency (25.3 Hz) circular translation pin-on-disc wear test device was recently introduced. In the present study, the pins were CoCr with a spherical, polished bearing surface of 28 mm radius, whereas the flat discs were conventional UHMWPE. This configuration was intended to simulate the wear mechanisms of total knee prostheses. The number of wear cycles run was as high as 200 million. The mean wear rate was 0.35 mg per one million cycles (0.77 mg/24 h) which corresponded to a mean wear factor of 3.5 × 10−6 mm3/Nm. The study provided further proof that a wear test for orthopaedic implant materials can be accelerated by substantially increasing the cycle frequency, provided that the sliding velocity remains close to the values obtained from biomechanical studies. Hence, the moderate frictional heating will not lead to unrealistic wear mechanisms.en
dc.description.versionPeer revieweden
dc.format.extent4
dc.format.extent149-152
dc.format.mimetypeapplication/pdf
dc.identifier.citationSaikko , V 2017 , ' High frequency circular translation pin-on-disc wear testing of UHMWPE using a ball-on-flat contact along a hypotrochoidal track ' , Polymer Testing , vol. 60 , pp. 149-152 . https://doi.org/10.1016/j.polymertesting.2017.03.024en
dc.identifier.doi10.1016/j.polymertesting.2017.03.024
dc.identifier.issn0142-9418
dc.identifier.otherPURE UUID: 33420334-4b2e-4f04-b41a-e42f1408659c
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/33420334-4b2e-4f04-b41a-e42f1408659c
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85016150938&partnerID=8YFLogxK
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/13307253/A1_saikko_vesa_2017_1.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/26497
dc.identifier.urnURN:NBN:fi:aalto-201705315112
dc.language.isoenen
dc.relation.ispartofseriesPolymer Testingen
dc.relation.ispartofseriesVolume 60en
dc.rightsopenAccessen
dc.subject.keywordAccelerated wear testing
dc.subject.keywordBiotribology
dc.subject.keywordOrthopaedic tribology
dc.subject.keywordProsthetic joints
dc.subject.keywordUHMWPE
dc.titleHigh frequency circular translation pin-on-disc wear testing of UHMWPE using a ball-on-flat contact along a hypotrochoidal tracken
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
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