【英文标准名称】:StandardTestMethodforMeasuringtheSkidResistanceofPavementsandOtherTraffickedSurfacesUsingaContinuousReading,Fixed-SlipTechnique
【原文标准名称】:用连续读数固定防滑技术对道路和其他区域表面防滑测试的标准试验方法
【标准号】:ASTME2340-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:brakingslipfriction;brakingslipratio;fixedslip;operationalfrictiontesting;routinefrictiontesting
【摘要】:CFMEsareusedtomeasureskidresistanceonrunways,roads,andvariousothertraffickedsurfaces.Thesetestsmaycompriseoperationaltesting,performedtoobtainanimmediateassessmentofskidresistanceincurrentconditionsorroutinetestinginstandardizedconditionswhichincludetheapplicationofapreciseamountofwaterinfrontofthetesttire.Standardtestspeedsandnominalwaterfilmthicknessesareaccordingtonationalorinternationalagencystandards,thetypeofCFME,andthetestapplication.SomeexamplesoftypicalapplicationsaregiveninAppendixX1.1.1Thistestmethodcoversthemeasurementoftheskidresistanceofapavementorothertraffickedsurfaceusingthecontinuousreading,fixed-sliptechnique.1.2Thistestmethodcoversbrakedwheelmeasurementsobtainedwithlessthan100%slip.Itdoesnotcoversideforcemeasurements.1.3Thistestmethodprovidesarecordoftheskidresistancealongthewholelengthofonetrackofthetestsurfaceandenablesaveragestobeobtainedforspecifiedtestsegments.1.4Thistestmethodisusedtomeasureskidresistanceonawidevarietyofsurfacesinawidevarietyofcircumstances.Consequently,therearemanydifferentdesignsofcontinuousreading,fixed-slipmeasuringequipment(CFME)andasmanydifferenttestproceduresgoverningtheiruse.1.5Thistestmethoddoesnotattempttodetailthesedifferentequipmentsandproceduresbutdoessetouttheessentialcommonprinciples.1.6CFMEsfunctionbycreatingandmeasuringafrictionalforcebetweenatesttireoperatingataselectedslipandthetestsurface.DifferenttypesofCFMEdonotnecessarilycreatethesamefrictionalforcebetweentheirparticulartesttireandacommontestsurfaceanddonotnecessarilyusethesamemethodtomeasurethisfrictionalforce.1.7CFMEmeasurementsareobtainedataselectedsteadytestspeed.Thisspeedmayvaryaccordingtotheapplication.1.8Thetestsurfacemaybecontaminatedorcleananddry.Ifitiscleananddry,ameasuredamountofwaterisnormallydepositedonthesurfacejustinfrontofthetestwheel.1.9Themeasuringapparatusmaybebuiltintoavehicle,builtintoatrailerthatistowedbyavehicle,orbuiltintoadevicethatismanuallypushed.1.10ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SafetyprecautionaryinformationiscontainedinSection7.
【中国标准分类号】:P66;Q20
【国际标准分类号】:93_080_20
【页数】:6P.;A4
【正文语种】:


【英文标准名称】:Beltdrive.Synchronousbelts.Calculationofpowerratinganddrivecentredistance.
【原文标准名称】:皮带传动.同步皮带.功率计算和传动中心距
【标准号】:NFE24-311-1988
【标准状态】:现行
【国别】:法国
【发布日期】:1988-09-01
【实施或试行日期】:1988-09-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:功率;皮带传动;符号;计算;功率测量;动力传送带;三角皮带;数学计算;公式
【英文主题词】:Beltdrives;Belts;Centredistances;Powertransmissionbelts;Ratedpower;Synchronousbelts;Synchronoustransmission
【摘要】:
【中国标准分类号】:J18
【国际标准分类号】:21_220_10
【页数】:3P;A4
【正文语种】:其他