【英文标准名称】:Roadvehicles-Brakelinings-Compressivestraintestmethod.
【原文标准名称】:道路车辆.制动闸衬.压缩应变试验方法
【标准号】:NFR12-612-2001
【标准状态】:作废
【国别】:法国
【发布日期】:2001-10-01
【实施或试行日期】:2001-10-05
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Brakelinings;Bulkmodulus;Compressibility;Determination;Roadvehicles;Testing;Tests
【摘要】:
【中国标准分类号】:T22
【国际标准分类号】:43_040_40
【页数】:20P.;A4
【正文语种】:其他
基本信息
标准名称: | 圆螺母 |
中标分类: |
机械 >>
工艺装备 >>
组合卡具 |
发布日期: | |
实施日期: | 1999-06-04 |
首发日期: | |
作废日期: | |
出版日期: | |
页数: | 1页 |
适用范围
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前言
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目录
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引用标准
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所属分类: 机械 工艺装备 组合卡具
【英文标准名称】:StandardPracticeforCalculatingPavementMacrotextureMeanProfileDepth
【原文标准名称】:铺地织物中间纵面深度计算的标准实施规程
【标准号】:ASTME1845-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E17.23
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:macrotextureprofile;meanprofiledepth;meantexturedepth;Macrotexturedepth/profile;Meanprofiledepth(MPD);Meantexturedepth(MTD);Pavementmacrotexture;Pavementsurfaces;Profiles--pavementsurfaces
【摘要】:Thispracticeissuitableforthecalculationoftheaveragemacrotexturedepthfromprofiledata.Theresultsofthiscalculation(MPD)haveproventobeusefulinthepredictionofthespeeddependenceofwetpavementfriction.TheMPDcanbeusedtoestimatetheresultofameasurementofmacrotexturedepthusingavolumetrictechniqueaccordingtoTestMethodE965.ThevaluesofMPDandMTDdifferduetothefinitesizeoftheglassspheresusedinthevolumetrictechniqueandbecausetheMPDisderivedfromatwo-dimensionalprofileratherthanathree-dimensionalsurface.Thereforeatransformationequationmustbeused.Thispracticemaybeusedwithpavementmacrotextureprofilestakenonactualroadsurfacesorfromcoresorlaboratorypreparedsamples.Aggregatesize,shape,anddistributionarefeatureswhicharenotaddressedinthispractice.Thispracticeisnotmeanttoprovideacompleteassessmentoftexturecharacteristics.Inparticular,careshouldbeusedwheninterpretingtheresultforporousorgroovedsurfaces.Thispracticedoesnotaddresstheproblemsassociatedwithobtainingameasuredprofile.Laserorotheropticalnoncontactmethodsofmeasuringprofilesareusuallypreferred.However,contactmethodsusingastylusalsocanprovideaccurateprofilesifproperlyperformed.1.1Thispracticecoversthecalculationofmeanprofiledepthfromaprofileofpavementmacrotexture.1.2Themeanprofiledepthhasbeenshowntobeusefulinpredictingthespeedconstant(gradient)ofwetpavementfriction.1.3AlineartransformationofthemeanprofiledepthcanprovideanestimateofthemeantexturedepthmeasuredaccordingtoTestMethodE965.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W56
【国际标准分类号】:17_040_20
【页数】:4P.;A4
【正文语种】:英语