SAE J2087 Daytime Running Light

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Product Code:SAE J2087
Title:Daytime Running Light
Issuing Committee:J2087 Daytime Running Lamp Task Force
Scope:This SAE Recommended Practice provides test procedures, requirements, and guidelines for daytime running lamps that are mounted on the exterior of a vehicle. It is applicable to daytime running lamps that are combined with or use headlamps, parking lamps, turn signal lamps, fog lamps, or other lamps on the front of the vehicle, as well as to daytime running lamps that use dedicated lamps.
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【英文标准名称】:StandardTestMethodforTorsionalRingShearTesttoDetermineDrainedFullySoftenedShearStrengthandNonlinearStrengthEnvelopeofCohesiveSoils(UsingNormallyConsolidatedSpecimen)forSlopeswithNoPreexistingShearSurfaces
【原文标准名称】:用扭矩环剪切试验法测定无预先存在的剪切面的斜坡上的粘性土壤(使用正常捣实的试样)的排水充分软化后的抗剪强度和非线性强度包线的标准试验方法
【标准号】:ASTMD7608-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D18.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:consolidated;drainedtestconditions;fullysoftenedshearstrength;reconstitutedspecimens;ring-sheartest;strengthenvelope
【摘要】:Theringshearapparatusmaintainsthecross-sectionalareaoftheshearsurfaceconstantduringshearandshearsthespecimencontinuouslyinonerotationaldirectionforanymagnitudeofdisplacementandalongentirecross-sectionalarea.Theringshearapparatusallowsareconstitutedspecimentobeconsolidatedatthedesirednormalstresspriortodrainedshearing.Thissimulatesthefieldconditionsunderwhichthefullysoftenedstrengthdevelopsinoverconsolidatedclays,claystones,mudstones,andshalesbecausethefullysoftenedstrengthcorrespondstothepeakshearstrengthofanormallyconsolidatedclay.Theringsheartestissuitedtotherelativelyrapiddeterminationofdrainedfullysoftenedshearstrengthbecauseoftheshortdrainagepaththroughthethinspecimenandfailureoccurringnearthetopporousstone.Theringsheartestminimizestheeffectofinitialdisturbancethatmayresultfromadjusting/creatingagapbeforestartingshearing,especiallyinthedirectsheardevice.Thetestresultsareprimarilyapplicabletoassesstheshearstrengthofoverconsolidatedsoilsfordrainedanalysisinslopesthatdonothaveapre-existingshearsurface,shearedbeddingplanes,joints,orfaults.Note18212;Notwithstandingthestatementsonprecisionandbiascontainedinthistestmethod:Theprecisionofthistestmethodisdependentonthecompetenceofthepersonnelperformingitandthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetenttesting.UsersofthistestmethodarecautionedthatcompliancewithPracticeD3740doesnotensurereliabletesting.Reliabletestingdependsonseveralfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethodprovidesaprocedureforperformingatorsionalringsheartestunderadrainedconditiontodeterminethefullysoftenedshearstrengthandnonlinearstrengthenvelopeofcohesivesoils.Thefullysoftenedstrengthisusedtoevaluatethestabilityofslopesthatdonothaveapreexistingshearsurface.Inaddition,thefullysoftenedshearstrengthcorrespondstothepeakshearstrengthofanormallyconsolidatedspecimen.Thistestmethodfocusesontheuseofareconstitutedspecimentomeasurethefullysoftenedstrength.Thistestmethodisperformedbyshearinganormallyconsolidated,reconstitutedspecimenatacontrolleddisplacementrateuntilthepeakshearresistancehasbeenobtained.Generally,thedrainedfullysoftenedfailureenvelopeisdeterminedatthreeormoreeffectivenormalstresses.Aseparatetestspecimenmustbeusedforeachnormalstresstomeasurethefullysoftenedstrengthotherwiseapost-peakorevenresidualstrengthwillbemeasuredifthesamespecimenisusedbecauseoftheexistenceofashearsurface.1.2Theringshearapparatusallowsareconstitutedspecimentobenormallyconsolidatedatthedesirednormalstresspriortodrainedshearing.Thissimulatesthefieldconditionsunderwhichthefullysoftenedstrengthdevelopsinoverconsolidatedclays,claystones,mudstones,andshales.1.3Ashearstress-displacementrelationshipmaybeobtainedfromthistestmethod.However,ashearstress-strainrelationshiporanyassociatedquantity,suchasmodulus,cannotbedeterminedfromthistestmethodbecausepossiblesoilextrusionandvolumechangepreventsdefiningtheheightneededintheshearstraincalculations.Asaresult,shearstraincannotbecalculatedbuts......
【中国标准分类号】:B11
【国际标准分类号】:13_080_20
【页数】:5P.;A4
【正文语种】:英语


基本信息
标准名称:化学试剂 氧化银
中标分类: 化工 >> 化学试剂 >> 一般无机试剂
发布日期:
实施日期:2002-07-01
首发日期:
作废日期:
出版日期:
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所属分类: 化工 化学试剂 一般无机试剂