ANSI/ASTM D2700-2001 用马达法测定机动车和航空燃料的抗爆性的试验(05.04)

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【英文标准名称】:MotorandAviationFuelsbytheMotorMethod,TestforKnockCharacteristicsof(05.04)
【原文标准名称】:用马达法测定机动车和航空燃料的抗爆性的试验(05.04)
【标准号】:ANSI/ASTMD2700-2001
【标准状态】:作废
【国别】:美国
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:特性;机动车燃料;试验;燃料
【英文主题词】:fuels;properties;testing;automotivefuels
【摘要】:
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:
【正文语种】:英语


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【英文标准名称】:StandardPracticeforMeasuringPlasmaArcGasEnthalpybyEnergyBalance
【原文标准名称】:用能量平衡法测量等离子体电弧气体焓的标准实施规程
【标准号】:ASTME341-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:E21.08
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:bulkenthalpy;energybalance;gasenthalpy;Bulkenthalpy;Electric-arc-heatedgasstream;Energyanalysis;Plasmaarcgasenthalpy;Totalgasenthalpy
【摘要】:Thepurposeofthispracticeistomeasurethetotalorstagnationgasenthalpyofaplasma-arcgasstreaminwhichnonreactivegasesareheatedbypassagethroughanelectricaldischargedeviceduringcalibrationtestsofthesystem.Theplasmaarcrepresentsoneheatsourcefordeterminingtheperformanceofhightemperaturematerialsundersimulatedhyperthermalconditions.Assuchthetotalorstagnationenthalpyisoneoftheimportantparametersforcorrelatingthebehaviorofablationmaterials.Themostdirectmethodforobtainingameasureoftotalenthalpy,andonewhichcanbeperformedsimultaneouslywitheachmaterialtest,ifdesired,istoperformanenergybalanceonthearcchamber.Inaddition,inmakingtheenergybalance,accuratemeasurementsareneededsincetheefficienciesofsomeplasmageneratorsarelow(aslowas15to20%orlessinwhichcasetheenthalpydependsuponthedifferenceoftwoquantitiesofnearlyequalmagnitude).Therefore,theaccuracyofthemeasurementsoftheprimaryvariablesmustbehigh,allenergylossesmustbecorrectlytakenintoaccount,andsteady-stateconditionsmustexistbothinplasmaperformanceandfluidflow.Inparticularitisnotedthattotalenthalpyasdeterminedbytheenergybalancetechniqueismostusefuliftheplasmageneratordesignminimizescoringeffects.Ifnonuniformityexiststheenthalpydeterminedbyenergybalancegivesonlytheaveragefortheentireplasmastream,whereasthelocalenthalpyexperiencedbyamodelinthecoreofthestreammaybemuchhigher.Moreprecisemethodsareneededtomeasurelocalvariationsintotalenthalpy.1.1Thispracticecoversthemeasurementoftotalgasenthalpyofanelectric-arc-heatedgasstreambymeansofanoverallsystemenergybalance.Thisissometimesreferredtoasabulkenthalpyandrepresentsanaverageenergycontentoftheteststreamwhichmaydifferfromlocalvaluesintheteststream.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A54
【国际标准分类号】:17_200_10
【页数】:5P.;A4
【正文语种】:英语


【英文标准名称】:Fibreopticattenuators-Part1:genericspecification.
【原文标准名称】:光纤衰减器.第1部分:一般规范
【标准号】:NFC93-890-1-2000
【标准状态】:现行
【国别】:法国
【发布日期】:2000-08-01
【实施或试行日期】:2000-08-05
【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】:纤维光学;规范;光波导;衰减;质量评定;定义;定义;质量保证;试验;特性;总规范;元部件;光纤;组件;;质量;连接;评定;电气工程
【英文主题词】:Attenuators;Components;Connections;Definition;Definitions;Electricalengineering;Evaluations;Fibreoptics;Genericspecification;Opticalwaveguides;Passive;Properties;Quality;Qualityassessment;Qualityassurance;Specification;Testing
【摘要】:
【中国标准分类号】:M33
【国际标准分类号】:33_180_20
【页数】:28P.;A4
【正文语种】:其他