【英文标准名称】:StandardTestMethodforPlastics:DynamicMechanicalProperties:InCompression
【原文标准名称】:塑料的标准试验方法:动态机械性能:压缩
【标准号】:ASTMD5024-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:(TestMethod)
【标准水平】:()
【中文主题词】:材料试验;塑料;测试;镦锻试验
【英文主题词】:compression;dynamicmechanicaltheologicalproperties;elastic;lineardisplacement;loss;storagemodulus;tandelta;viscoelasticbehavior
【摘要】:Thistestmethodprovidesasimplemeansofcharacterizingthethermomechanicalbehaviorofplasticcompositionsusingverysmallamountsofmaterial.Thedataobtainedcanbeusedforqualitycontroland/orresearchanddevelopmentpurposes.Forsomeclassesofmaterials,suchasthermosets,itcanalsobeusedtoestablishoptimumprocessingconditions.Dynamicmechanicaltestingprovidesasensitivemethodfordeterminingthermomechanicalcharacteristicsbymeasuringtheelasticandlossmoduliasafunctionoffrequency,temperature,ortime.Plotsofmoduliandtandeltaofamaterialversusthesevariablesprovidegraphicalrepresentationindicativeoffunctionalproperties,effectivenessofcure(thermosettingresinsystem),anddampingbehaviorunderspecifiedconditions.Thistestmethodcanbeusedtoassess:5.3.1Modulusasafunctionoftemperature,5.3.2Modulusasafunctionoffrequency,5.3.3Theeffectsofprocessingtreatment,includingorientation,5.3.4Relativeresinbehavioralproperties,includingcureanddamping,5.3.5Theeffectsofsubstratetypesandorientation(fabrication)onelasticmodulus,and,5.3.6Theeffectsofformulationadditiveswhichmightaffectprocessabilityorperformance.Beforeproceedingwiththistestmethod,referenceshouldbemadetothespecificationofthematerialbeingtested.Anytestspecimenpreparation,conditioning,dimensions,ortestingparameters,orcombinationthereof,coveredintherelevantASTMmaterialsspecificationshalltakeprecedenceoverthosementionedinthistestmethod.IftherearenorelevantASTMmaterialspecifications,thenthedefaultconditionsapply.1.1Thistestmethodoutlinestheuseofdynamicmechanicalinstrumentationfordeterminingandreportingtheviscoelasticpropertiesofthermoplasticandthermosettingresinsaswellascompositesystemsintheformofcylindricalspecimensmoldeddirectlyorcutfromsheets,plates,ormoldedshapes.Thecompressiondatageneratedmaybeusedtoidentifythethermomechanicalpropertiesofaplasticsmaterialorcompositionusingavarietyofdynamicmechanicalinstruments.1.2Thistestmethodisintendedtoprovideameansfordeterminingthethermomechanicalproperties(asafunctionofanumberofviscoelasticvariables)forawidevarietyofplasticmaterialsusingnonresonant,forced-vibrationtechniquesasoutlinedinPracticeD4065.Plotsoftheelastic(storage)modulus,loss(viscous)modulus,complexmodulus,andtandeltaasafunctionoffrequency,time,ortemperatureareindicativeofsignificanttransitionsinthethermomechanicalperformanceofthepolymericmaterialsystem.1.3Thistestmethodisvalidforawiderangeoffrequencies,typicallyfrom0.01to100Hz.1.4Apparentdiscrepanciesmayariseinresultsobtainedunderdifferingexperimentalconditions.Theseapparentdifferencesfromresultsobservedinanotherstudycanusuallybereconciled,withoutchangingtheobserveddata,byreportinginfull(asdescribedinthistestmethod)theconditionsunderwhichthedatawereobtained.1.5Duetopossibleinstrumentationcompliance,thedatageneratedareintendedtoindicaterelativeandnotnecessarilyabsolutepropertyvalues.1.6Testdataobtainedbythistestmethodarerelevantandappropriateforuseinengineeringdesign.1.7ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationsprior......
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:3P.;A4
【正文语种】:


【英文标准名称】:Criticalitysafetyinprocessingandhandlingfissilematerials-Part2:Criticalitydataforuranium235metallight-watermixtures
【原文标准名称】:核燃料的处理和和搬运时的临界安全性.第2部分:铀235金属轻水混合物的临界数据
【标准号】:DIN25403-2-1995
【标准状态】:现行
【国别】:德国
【发布日期】:1995-10
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:铀235;临界;轻水;铀;定义;混合物;轻水反应堆;核燃料;燃料;核反应堆;最小;值;反应堆;反光镜;数值;反应堆工艺学;金属;反射;原子;临界数据;临界安全;搬运;核技术
【英文主题词】:
【摘要】:Thedocumentspecifiesrequirementsrelatingtocriticalitysafetyduringtheprocessingandhandlingoffissilematerial,inparticularcriticalitydataforuranium235metallight-watermixtures.Thegivennumericalvaluesandcurvesshallbeusedonaisolatedsystemofuranium235metalhomogeniouslydistributedinlightwatermaximumreflectionbylightwater.#,,#
【中国标准分类号】:F09
【国际标准分类号】:27_120_30
【页数】:8P;A4
【正文语种】:德语