EN 2591-603-2002 航空航天系列.光电连接件.试验方法.第603部分:光学元件.配电改变
时间:2024-05-17 11:24:12 来源: 标准资料网 作者：标准资料网 阅读：9521
【英文标准名称】:Aerospaceseries-Elementsofelectricalandopticalconnection;Testmethods-Part603:Opticalelements;Changeofpowerdistribution;GermanversionEN2591-603:2002
【原文标准名称】:航空航天系列.光电连接件.试验方法.第603部分:光学元件.配电改变
【标准号】:EN2591-603-2002
【标准状态】:现行
【国别】:
【发布日期】:2002-12
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:紧固件;光学元件;航天运输;多语种的;航空运输;电力设备;航空航天运输;试验;电气设备;飞行器;配电;电气元件;电连接器
【英文主题词】:Aerospacetransport;Airtransport;Aircraft;Electricconnectors;Electricalcomponents;Electricalequipment;Electricalinstallations;Fasteners;Multilingual;Opticalelements;Powerdistribution;Spacetransport;Testing
【摘要】:
【中国标准分类号】:V20
【国际标准分类号】:
【页数】:9P.;A4
【正文语种】:英语
MIL-DTL-17376/2A, DETAIL SPECIFICATION: CAPS AND FLANGES COMPRESSED-GAS CYLINDER: FLANGES, LOW PRESSURE (22 MAR 2007) [SUPERSEDING MIL-C-17376/2]., This detail specification sheet is approved for use by all departments and agencies of theDepartment of Defense.The requirements for acquiring the product described herein shall consist of this detailspecification sheet and MIL-DTL-17376, "Caps and Flanges, Compressed-Gas Cylinder,General Specification for".【英文标准名称】:StandardTestMethodforPlastics:DynamicMechanicalPropertiesMeltRheology
【原文标准名称】:塑料的标准试验方法:动力机械性能.熔体流变学
【标准号】:ASTMD4440-2008
【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】:D20.10
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:Dynamicmechanicalanalysis(DMA)--plastics;Flowandflowrate--thermoplastics;Frequencymeasurements;Meltindex;Polymers;Rheology/rheologicalproperties--plastics;Straintesting--plastics;Thermoplasticresins;Viscoelasticproperties;Viscosity--p
【摘要】:Thistestmethodprovidesasimplemeansofcharacterizingtheimportantrheologicalpropertiesandviscosityofthermoplasticpolymersusingverysmallamountsofmaterial(approximately25to50mmindiameterby1to3mminthickness...approximately3to5g).Datamaybeusedforqualitycontrol,researchanddevelopment,andestablishmentofoptimumprocessingconditions.Dynamicmechanicaltestingprovidesasensitivemethodfordeterminingmoltenpolymerpropertiesbymeasuringtheelasticandlossmoduliasafunctionoffrequency,strain,temperature,ortime.Plotsofviscosity,storage,andlossmoduli,andtandeltaasafunctionoftheaforementionedprocessparametersprovidegraphicalrepresentationindicativeofmolecularweight,molecularweightdistribution,effectsofchainbranching,andmelt-processabilityforspecifiedconditions.Valuesobtainedinthistestmethodcanbeusedtoassessthefollowing:Complexviscosityofthepolymermeltasafunctionofdynamicoscillation,Processingviscosity,minimumaswellaschangesinviscosityasafunctionofexperimentalparameters,Effectsofprocessingtreatment,Relativepolymerbehavioralproperties,includingviscosityanddamping,andEffectsofformulationadditivesthatmightaffectprocessabilityorperformance.Beforeproceedingwiththistestmethod,referenceshouldbemadetothespecificationofthematerialbeingtested.Anytestspecimenpreparation,conditioning,dimensions,ortestingparameters,orcombinationthereof,coveredintherelevantASTMmaterialsspecificationshalltakeprecedenceoverthosementionedinthetestmethod.IftherearenorelevantASTMmaterialspecifications,thenthedefaultconditionsapply.1.1Thistestmethodoutlinestheuseofdynamicmechanicalinstrumentationindeterminingandreportingtherheologicalpropertiesofthermoplasticresinsandothertypesofmoltenpolymers.Itmaybeusedasamethodfordeterminingthecomplexviscosityandothersignificantviscoelasticcharacteristicsofsuchmaterialsasafunctionoffrequency,strainamplitude,temperature,andtime.Suchpropertiesmaybeinfluencedbyfillersandotheradditives.1.2Itincorporatesalaboratorytestmethodfordeterminingtherelevantrheologicalpropertiesofapolymermeltsubjectedtovariousoscillatorydeformationsonaninstrumentofthetypecommonlyreferredtoasamechanicalordynamicspectrometer.1.3Thistestmethodisintendedtoprovideameansofdeterminingtherheologicalpropertiesofmoltenpolymers,suchasthermoplasticsandthermoplasticelastomersoverarangeoftemperaturesbynonresonant,forced-vibrationtechniques.Plotsofmodulus,viscosity,andtandeltaasafunctionofdynamicoscillation(frequency),strainamplitude,temperature,andtimeareindicativeoftheviscoelasticpropertiesofamoltenpolymer.1.4Thistestmethodisvalidforawiderangeoffrequencies,typicallyfrom0.01to100Hz.1.5Thistestmethodisintendedforhomogenousandheterogeneousmoltenpolymericsystemsandcompositeformulationscontainingchemicaladditives,includingfillers,reinforcements,stabilizers,plasticizers,flameretardants,impactmodifiers,processingaids,andotherimportantchemicaladditivesoftenincorporatedintoapolymericsystemforspecificfunctionalproperties,andwhichcouldaffecttheprocessabilityandfunctionalperformance.Thesepolymericmaterialsystemshavemoltenviscositiestypicallylessthan106Pax00B7;s(107poise).1.6Apparentdiscrepanciesmayariseinresultsobtainedunderdifferingexperimentalconditions.Withoutchangingtheobserveddata,reportinginfull(asdescribedinthistestmethod)theconditionsunderwhicht......
【中国标准分类号】:G31
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】:英语