ASTMD22337407575300539972402(CTbDesignation:D2231-94AMERICANSOCIETYFORTESTINGANDMATERIALS1916RaceSt.Philadelphia,Pa19103ReprintedfromtheAnnualBookofASNStandards.CopyrightASTMlinotlistedinthecurrentcombinedindex,willappearintheneyteditionStandardPracticeforRubberPropertiesinForcedVibration’ThisstandardisissuedunderthefixeddesignationD2231;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(t)indicatesaneditorialchangesincethelastrevisionorreapproval.1.ScopeI.1Thispracticedescribesthetermsusedinthefieldofdynamicmechanicaltesting,thefactorsinvolvedinforcedvibrationtestingofvulcanizates,andrecommendsstandardtestconditions.1.2ThevaluesstatedinSiunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinforma-tiononly.I.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:D945TestMethodsforRubberPropertiesinCompres-D1054TestMethodforRubberProperty-ResilienceD1349PracticeforRubber-StandardTemperaturesforsionorShear(MechanicalOscillograph)2UsingaReboundPendulum2Testing23.Terminology3,1DescriptionsofTermsSpecifictoThisStandard:3.I.1Eachofthefollowingtermsandrelationshipsapplytolinearlumpedmodelsofrubberbehavior.3.1.2Itisrecommendedthattheunqualifiedterm“modulus”shouldmean“shearmodulus.”“Normal”or“extension”or“Young’s’’modulusshouldbesoprefaced.“Bulk”or“hydrostaticcompression”modulusofelastomersisanorderofmagnitudelargerthanthedeformationmoduliconsideredhere.3.1.3TermsApplyingtoAnyPeriodicMotionofMechan-icalSystems:3.1.3.1energyloss-theenergyperunitvolumethatislostineachdeformationcycle.Itistheratiooftheenergyrepresentedbyhysteresisloopareatothetestspecimenvolume.IThispracticeisunderth...
