ASTM D3858-1995(2003) 用速度面积法测量明渠水流量的标准试验方法
时间:2024-05-21 03:08:24 来源: 标准资料网 作者：标准资料网 阅读：9415
【英文标准名称】:StandardTestMethodforOpen-ChannelFlowMeasurementofWaterbyVelocity-AreaMethod
【原文标准名称】:用速度面积法测量明渠水流量的标准试验方法
【标准号】:ASTMD3858-1995(2003)
【标准状态】:现行
【国别】:
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:D19.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:运河;测量;水;速度;流速
【英文主题词】:dischargemeasurement;openchannelflow;waterdischarge
【摘要】:Thistestmethodisusedtomeasurethevolumerateofflowofwatermovinginriversandstreamsandmovingoverorthroughlargeman-madestructures.Itcanalsobeusedtocalibratesuchmeasuringstructuresasdamsandflumes.Measurementsmaybemadefrombridges,cableways,orboats;bywading;orthroughholescutinanicecover.Thistestmethodisusedinconjunctionwithdeterminationsofphysical,chemical,andbiologicalqualityandsedimentloadingswheretheflowrateisarequiredparameter.1.1Thistestmethodcoversthemeasurementofthevolumerateofflowofwaterinopenchannelsbydeterminingtheflowvelocityandcross-sectionalareaandcomputingthedischargetherefrom(Refs(1-7)).178;1.2Theproceduresdescribedinthistestmethodarewidelyusedbythoseresponsibleforthecollectionofstreamflowdata,forexample,theU.S.GeologicalSurvey,BureauofReclamation,U.S.ArmyCoprsofEngineers,U.S.DepartmentofAgriculture,WaterSurveyCanada,andmanystateandprovincialagencies.Theproceduresaregenerallyfrominternaldocumentsoftheabovelistedagencies,whichhavebecomethedefactostandardsasusedinNorthAmerica.1.3Thistestmethodcoverstheuseofcurrentmeterstomeasureflowvelocities.Dischargemeasurementsmaybemadetoestablishisolatedsinglevalues,ormaybemadeinsetsorinaseriesatvariousstagesorwater-levelelevationstoestablishastage-dischargerelationatasite.Ineithercase,thesametestmethodisfollowedforobtainingfielddataandcomputationofdischarge.1.4MeasurementsforthepurposeofdeterminingthedischargeinefficiencytestsofhydraulicturbinesarespecifiedinInternationalElectrotechnicalCommissionPublication41179;forthefieldacceptancetestsofhydraulicturbines,andarenotincludedinthistestmethod.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:
【页数】:9P.;A4
【正文语种】:
【英文标准名称】:StandardTestMethodforPendulumImpactResistanceofPlasticFilm
【原文标准名称】:塑料薄膜耐摆锤式冲击的标准试验方法
【标准号】:ASTMD3420-1995(2002)
【标准状态】:现行
【国别】:
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:D20.19
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:冲击强度;箔;试验;塑料
【英文主题词】:film;impact;impactresistance;pendulum;pendulumimpact;
【摘要】:Likeothertechniquestomeasuretoughness,thistestmethodprovidesameanstodetermineparametersofamaterialatstrainratesclosertosomeend-useapplicationsthanprovidedbylow-speeduniaxialtensiletests.Dynamictensilebehaviorofafilmisimportant,particularlywhenthefilmisusedasapackagingmaterial.Thesameuncertaintiesaboutcorrelationswiththicknessthatapplytootherimpacttestsalsoapplytothistest(seesection3.4ofTestMethodsD1709).Hence,noprovisionforrationalizingtounitthicknessisprovided.Also,noprovisionismadefortestingatnon-ambienttemperatures.Thistestmethodincludestwoprocedures,similarexceptwithregardtosamplesize:ProcedureAfor60-mmdiameterandProcedureBfor89-mmdiameter(commonlycalledthex201C;Spencerx201D;).Thedatahavenotbeenshownrelatabletoeachother.Severalimpacttestmethodsareusedforfilm.Itissometimesdesirabletoknowtherelationshipsamongtestresultsderivedbydifferentmethods.Astudywasconductedinwhichfourfilmsmadefromtworesins(polypropyleneandlinearlow-densitypolyethylene),withtwofilmthicknessesforeachresin,wereimpactedusingTestMethodsD1709(MethodA),TestMethodD3420(ProceduresAandB),andTestMethodD4272.ThetestresultsareshowninAppendixX2.DifferencesinresultsbetweenTestMethodsD1709andD4272maybeexpectedsinceTestMethodsD1709representsfailureinitiatedenergywhileTestMethodD4272isinitiationpluscompletionenergy.Somefilmsmayshowconsistencywhentheinitiationenergyisthesameasthetotalenergy.ThisstatementandthetestdataalsoappearinthesignificanceandappendixessectionsofTestMethodsofD1709andD4272.1.1Thistestmethodcoversthedeterminationofresistanceoffilmtoimpact-puncturepenetration.Knowledgeofhowtheimpactenergyisabsorbedbythespecimenwhileitisdeformingundertheimpactloading,andthebehaviorofthespecimenafteryielding,isnotprovidedbythistest.Noprovisionismadefornonambienttemperaturesinthistestmethod.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardsstatementsaregiveninSection7.Note18212;lThereisnosimilarorequivalentISOstandard.
【中国标准分类号】:G33
【国际标准分类号】:83_140_10
【页数】:7P.;A4
【正文语种】:
【英文标准名称】:SpecificationforPavingBrick
【原文标准名称】:细集料表面湿度的测试方法
【标准号】:ASTMC7-1942
【标准状态】:作废
【国别】:
【发布日期】:1942
【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】:
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:试验;混凝土;建筑;施工材料;细集料;表面;集料;潮气
【英文主题词】:
【摘要】:
【中国标准分类号】:Q14
【国际标准分类号】:
【页数】:
【正文语种】: