Designation:G203−10StandardGuideforDeterminingFrictionEnergyDissipationinReciprocatingTribosystems1ThisstandardisissuedunderthefixeddesignationG203;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidecoversandisintendedforuseininterpretingthefrictionforcesrecordedinreciprocatingtribosystems.Theguideappliestoanyreciprocatingtribosystem,whetheritisawearorfrettingtestoranactualmachineordevice.1.2Theenergydissipationguidewasdevelopedinanalyz-ingfrictionresultsintheTestMethodG133reciprocatingball-on-flattest,butitappliestootherASTMorISOrecipro-catingtests.Thistechniqueisfrequentlyusedtorecordthefrictionresponseinfrettingtribosystems.1.3Specimenmaterialmayplaysomeroleintheresultsifthematerialsundertestdisplayviscoelasticbehavior.Thisguideaswrittenisformetals,plastics,andceramicsthatdonotdisplayviscoelasticbehavior.Italsoappliestolubricatedandnon-lubricatedcontacts.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2G40TerminologyRelatingtoWearandErosionG115GuideforMeasuringandReportingFrictionCoeffi-cientsG133TestMethodforLinearlyReciprocatingBall-on-FlatSlidingWearG163GuideforDigitalDataAcquisitioninWearandFrictionMeasurements3.Terminology3.1Definitions:3.1.1coeffıcientoffriction,n—intribology,thedimension-lessratioofthefrictionforce(F)betweentwobodiestothenormalforce(N)pressingthesebodiestogether.G403.1.2fretting—smallamplitudeoscillatorymotion,usuallytangentialbetweentwosolidsurfacesincontact.G403.2DefinitionsofTerm...
