DIN 74051-1-1989 汽车和挂车的机械连接.自动螺栓联轴节40.尺寸和计算数据
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【英文标准名称】:Mechanicalconnectionsbetweentowingvehiclesandtrailers;automaticboltcoupling40;dimensionsandcalculatingdata
【原文标准名称】:汽车和挂车的机械连接.自动螺栓联轴节40.尺寸和计算数据
【标准号】:DIN74051-1-1989
【标准状态】:现行
【国别】:德国
【发布日期】:1989-01
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:自动;数学计算;尺寸;形状;挂车;螺栓联轴器;公差;规范(审批);球状联结器;牵引属具;尺寸公差;作标记;摩托车;螺栓
【英文主题词】:Automatic;Ballcouplings;Boltcouplings;Bolts;Dimensionaltolerances;Dimensions;Marking;Mathematicalcalculations;Motorvehicles;Shape;Specification(approval);Tolerances(measurement);Towingattachme
【摘要】:
【中国标准分类号】:T21
【国际标准分类号】:43_040_70
【页数】:6P;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforMeasuringFrictionandWearPropertiesofLubricatingGreaseUsingaHigh-Frequency,Linear-Oscillation(SRV)TestMachine
【原文标准名称】:用高频率,线性摆动试验机测量润滑油脂开裂和磨损特征的标准试验方法
【标准号】:ASTMD5707-2005
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:D02.G0.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:摩擦系数;摩擦;高;润滑剂;振荡;石油产品;试验;磨损
【英文主题词】:coefficientoffriction;lubricatinggrease;oscillation;SRV;wear
【摘要】:Thistestmethodcanbeusedtodeterminewearpropertiesandcoefficientoffrictionoflubricatinggreasesatselectedtemperaturesandloadsspecifiedforuseinapplicationswherehigh-speedvibrationalorstart-stopmotionsarepresentforextendedperiodsoftimeunderinitialhighHertzianpointcontactpressures.Thistestmethodhasfoundapplicationinqualifyinglubricatinggreasesusedinconstantvelocityjointsoffront-wheel-driveautomobilesandforlubricatinggreasesusedinrollerbearings.Usersofthistestmethodshoulddeterminewhetherresultscorrelatewithfieldperformanceorotherapplications.1.1Thistestmethodcoversaprocedurefordeterminingalubricatinggrease''scoefficientoffrictionanditsabilitytoprotectagainstwearwhensubjectedtohigh-frequency,linear-oscillationmotionusinganSRVtestmachineatatestloadof200N,frequencyof50Hz,strokeamplitudeof1.00mm,durationof2h,andtemperaturewithintherangeofthetestmachine,specifically,ambientto280C.Othertestloads(10to1200NforSRVI-model,10to1400NforSRVII-model,and10to2000NforSRVIII-model),frequencies(5to500Hz)andstrokeamplitudes(0.1upto4.0mm)canbeused,ifspecified.Theprecisionofthistestmethodisbasedonthestatedparametersandtesttemperaturesof50and80C.Averagewearscardimensionsonballandcoefficientoffrictionaredeterminedandreported.OptimolInstrumentssuppliesanupgradekittoallowSRVI/II-machinestooperatewith1600N,ifneeded.1.2Thistestmethodcanalsobeusedfordeterminingafluidlubricant''sabilitytoprotectagainstwearanditscoefficientoffrictionundersimilartestconditions.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E34
【国际标准分类号】:75_100
【页数】:7P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforVerticalReboundCharacteristicsofSportsSurface/BallSystems;AcousticalMeasurement
【原文标准名称】:球类运动场垂直回弹特性的标准试验方法.声学测量
【标准号】:ASTMF2117-2001
【标准状态】:作废
【国别】:
【发布日期】:2001
【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】:F08.52
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:sportssurface;verticalballrebound;acousticrebound
【摘要】:Theball-surfaceinteractionisjustoneoftheimportantpropertiesofasportssurface.Itmaybeanindicatoroftheplayabilityorsuitabilityofthesurface.Manufacturersofsportingballsmayusethismethodtoeva
【中国标准分类号】:Y55
【国际标准分类号】:17_140_99;97_220_10
【页数】:7P.;A4
【正文语种】:
