ASTM E445/E445M-1988(2008) 装有足尺寸轮胎的客车在铺覆路面上刹车距离的标准试验方法
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【英文标准名称】:StandardTestMethodforStoppingDistanceonPavedSurfacesUsingaPassengerVehicleEquippedWithFull-ScaleTires
【原文标准名称】:装有足尺寸轮胎的客车在铺覆路面上刹车距离的标准试验方法
【标准号】:ASTME445/E445M-1988(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1988
【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】:
【英文主题词】:Brakingforce/torque(onpavementsurfaces);Passengercars;Pavementsurfaces;Stoppingdistance;Tiretesting
【摘要】:Theknowledgeofvehiclestoppingdistanceservesasanadditionaltoolincharacterizingthepavementsurfaceskidresistance.Whenusedinconjunctionwithotherphysicalandchemicaltests,theskidresistancevaluesderivedfromthistestmethodmaydeterminethesuitabilityandadequacyofpavingmaterialsorfinishingtechniques.Improvementsinpavementmaintenancepracticesandschedulesmayresultfromuseofthistestmethod.Thestoppingdistancevaluesmeasuredbythistestmethodwiththeequipmentandproceduresstatedhereindonotnecessarilyagreeorcorrelatedirectlywithothermethodsofskid-resistancemeasurements.,Thistestmethodissuitableforresearchanddevelopmentpurposes,wheredirectcomparisonbetweenpavementsurfacesaretobemadewithinthesametestprogram.1.1Thistestmethodcoversthemeasurementofstoppingdistanceonpavedsurfaceswithapassengervehicleequippedwithspecifiedfull-scaleautomobiletires.1.2Thistestmethodutilizesameasurementofstoppingdistancesrepresentingthenon-steadystateskidresistanceonfourlockedwheelsasthevehicledeceleratesoverawettedpavementsurfaceunderspecifiedlimitsofstaticwheelloadandfromadesiredspeed,whilethevehicleremainsessentiallyparalleltoitsoriginaldirectionofmotion.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.4Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G41
【国际标准分类号】:93_080_20
【页数】:4P.;A4
【正文语种】:英语
【原文标准名称】:装有足尺寸轮胎的客车在铺覆路面上刹车距离的标准试验方法
【标准号】:ASTME445/E445M-1988(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1988
【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】:
【英文主题词】:Brakingforce/torque(onpavementsurfaces);Passengercars;Pavementsurfaces;Stoppingdistance;Tiretesting
【摘要】:Theknowledgeofvehiclestoppingdistanceservesasanadditionaltoolincharacterizingthepavementsurfaceskidresistance.Whenusedinconjunctionwithotherphysicalandchemicaltests,theskidresistancevaluesderivedfromthistestmethodmaydeterminethesuitabilityandadequacyofpavingmaterialsorfinishingtechniques.Improvementsinpavementmaintenancepracticesandschedulesmayresultfromuseofthistestmethod.Thestoppingdistancevaluesmeasuredbythistestmethodwiththeequipmentandproceduresstatedhereindonotnecessarilyagreeorcorrelatedirectlywithothermethodsofskid-resistancemeasurements.,Thistestmethodissuitableforresearchanddevelopmentpurposes,wheredirectcomparisonbetweenpavementsurfacesaretobemadewithinthesametestprogram.1.1Thistestmethodcoversthemeasurementofstoppingdistanceonpavedsurfaceswithapassengervehicleequippedwithspecifiedfull-scaleautomobiletires.1.2Thistestmethodutilizesameasurementofstoppingdistancesrepresentingthenon-steadystateskidresistanceonfourlockedwheelsasthevehicledeceleratesoverawettedpavementsurfaceunderspecifiedlimitsofstaticwheelloadandfromadesiredspeed,whilethevehicleremainsessentiallyparalleltoitsoriginaldirectionofmotion.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.4Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G41
【国际标准分类号】:93_080_20
【页数】:4P.;A4
【正文语种】:英语
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