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1、OutlineIntroduction:Tribology&BiotribologyBiotribologyExamplesofBiotribologySkinArtificialheartDentalFracturefixationFlowofredbloodcellsOcularsystemSynovialjointsFutureDevelopmentsDefinitionthestudyoftribes?thestudyofhairasinTrichology?Try-biology?TribologyDefinitionTribology:"Tribo-,Gr.Tri
2、bos-(??i??s):rubbing;-logy:namesofsciencesordepartmentsofstudy“Thebranchofscienceandtechnologyconcernedwithinteractingsurfacesinrelativemotionandwithassociatedmatters(asfriction,wear,lubrication,andthedesignofbearings).OxfordEnglishDictionary“Thescienceandtechnologyofinteractingsurfacesinre
3、lativemotionandthepracticesrelatedthereto”JostReport(1966)Surfaces,friction,wearandlubricationDefinitionhttp://www.shef.ac.uk/mecheng/mecheng_cms/tribology/DefinitionBiotribology:Allaspectsoftribologyrelatedtobiologicalsystems(ProfessorDuncanDowosnandProfessorVernaWright,UniversityofLeeds,1
4、973)Dental,skin,clothes,hair,footwear,contactlensandeye,replacementheartvalves,fracturerepair,pleuralandpericardium,andnaturalsynovialjointsandartificialreplacements.Surfaces"GodmadematerialsbutsurfacesweretheworkoftheDevil."Pauli,NobelPrizeforPhysics,1945http://www.maitrise-orthop.comDowso
5、netal,JArthroplasty,2004SurfacesAllsurfacesarerough:Atomicdiameters1to10?Irregularitiesonmica20?Quartzcrystal100?Ceramicsurfaces?0.005?m(50?)Metallicsurfaces?0.005to0.01?m(100?)1angstrom(?)=10-10m=10-4mmSurfacesSurfaceshttp://www.maitrise-orthop.com/corpusmaitri/index_us.html,ADambreville*,
6、MPhillipe**,ARay***,*CliniqueSt-Michel,29000Quimper,**H?pitaldeCarpentras4200CARPENTRAS,***ClinqueduParc69458LYONCEDEX-FranceSurfacesProfilometryNon-contactingsuchaslaserorwhitelightContactingsuchasstylusmethodAverageroughness(Ra)LSurfacesSameRa,butnotsametribologyandotherroughnessparameter
7、sarealsorequired!UseofRawithcaution!FrictionFrictionislooselydefinedastheresistancetomotion.LeonardodaVinci(AD1452–1519)FrictionAmontons,1699Theforceoffriction(F)isdirectlyproportionaltotheappliedload(w)Theforceoffriction(F)isindependentoftheapparentarea
