【英文标准名称】:StandardTestMethodforFrictionCoefficientMeasurementsBetweenTireandPavementUsingaVariableSlipTechnique
【原文标准名称】:用可变滑动技术测量轮胎和路面之间摩擦系数的标准试验方法
【标准号】:ASTME1859-1997(2006)
【标准状态】:现行
【国别】:
【发布日期】:1997
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E17.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:轮胎
【英文主题词】:tire
【摘要】:1.1Thistestmethodcoversthemeasurementofthelongitudinalfrictioncoefficientwithameasurementdevicethatimposesbraking-slipbetweenatireandasurfaceforthefullrangeofbraking-slipspeedvalues.1.2Thistestmethodutilizesaseriesofincrementalsinglemeasurementsoffrictionforceonabrakedtestwheelasitispulledoverawettedorcontaminatedpavementsurface.Therotationalvelocityofthebrakedwheelisfeedbackcontrolledinordertogiveapredeterminedvariableslipratiogradientinaccordancewithsetprogramparameters.Thetestwheeliskeptunderaconstantstaticnormalloadandataconstantlongitudinalspeedoftravel.Itsmajorplaneisperpendiculartotheroadplaneandparalleltoitsdirectionofmotion.1.3Thevaluesmeasuredrepresentthefrictionpropertiesobtainedwiththeequipmentandproceduresstatedinthistestmethodanddonotnecessarilyagreeorcorrelatedirectlywiththoseobtainedbyotherpavementfrictionmeasuringmethods.1.4Thevaluesareintendedforusein:1.4.1Evaluatingthebrakingfrictionforcesonapavementrelativetothatofotherpavements.1.4.2Evaluatingchangesinthebrakingfrictionforcesofaparticularpavementwiththepassageoftime.1.4.3Evaluatingthechangesinthebrakingfrictionforceofapavementwhensubjectedtopolishingwearandlossofmacrotexturecausedbytrafficwithpassageoftime.1.4.4Evaluatingchangesinthebrakingfrictionforcesofapavementcontaminatedwithice,moderateamountsofslushandsnow,pollen,vehicleoilspillsandcondensatesfromvehicleengineexhaust,anddepositsfromotherpollutionsources.1.4.5Evaluatingthebrakingfrictionforcesofaspecimentireonacleanorcontaminatedpavement.1.5Thefrictionvaluesreportedbythistestmethodareinsufficienttodeterminethedistancerequiredtostopavehicleoneitheradry,wet,orcontaminatedpavement.Theyarealsoinsufficientfordeterminingthespeedatwhichcontrolofavehiclewouldbelost.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundvaluesgiveninparenthesesareprovidedforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection6andNote4.
【中国标准分类号】:G41
【国际标准分类号】:83_160_01;93_080_99
【页数】:8P.;A4
【正文语种】: