ASTM C 761-2004 六氟化铀的化学、质谱、光谱化学、核(放射性)及放射化学分析的标准试验方法
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【英文标准名称】:StandardTestMethodsforChemical,MassSpectrometric,Spectrochemical,Nuclear,andRadiochemicalAnalysisofUraniumHexafluoride
【原文标准名称】:六氟化铀的化学、质谱、光谱化学、核(放射性)及放射化学分析的标准试验方法
【标准号】:ASTMC761-2004
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【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】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;铀;六氟化物;分析;核能
【英文主题词】:uranium;nuclearenergy;hexafluoride;analysis;testing
【摘要】:
【中国标准分类号】:F46
【国际标准分类号】:27_120_30
【页数】:36P;A4
【正文语种】:英语
【原文标准名称】:六氟化铀的化学、质谱、光谱化学、核(放射性)及放射化学分析的标准试验方法
【标准号】:ASTMC761-2004
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【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】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;铀;六氟化物;分析;核能
【英文主题词】:uranium;nuclearenergy;hexafluoride;analysis;testing
【摘要】:
【中国标准分类号】:F46
【国际标准分类号】:27_120_30
【页数】:36P;A4
【正文语种】:英语
下载地址: 点击此处下载
上一篇: ASTM E 720-2004 电子辐射强度试验中中子波谱测定用中子探测器的选择和使用标准指南
下一篇: ASTM C 1380-2004 用同位素稀释质谱法测定铀含量和同位素成分的标准试验方法
下一篇: ASTM C 1380-2004 用同位素稀释质谱法测定铀含量和同位素成分的标准试验方法
【英文标准名称】:StandardTestMethodforLinear-ElasticPlane-StrainFractureToughnessKIcofMetallicMaterials
【原文标准名称】:金属材料的线性弹性平面变形断裂韧度KIc用标准试验方法
【标准号】:ASTME399-2009e2
【标准状态】:现行
【国别】:
【发布日期】:2009
【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】:E08.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:半制成品;疲劳;金属和金属材料
【英文主题词】:Fabricatedmaterials;Fatigue;Metalsandmetallicmaterials
【摘要】:ThepropertyKIcdeterminedbythistestmethodcharacterizestheresistanceofamaterialtofractureinaneutralenvironmentinthepresenceofasharpcrackunderessentiallylinear-elasticstressandseveretensileconstraint,suchthat(1)thestateofstressnearthecrackfrontapproachestritensileplanestrain,and(2)thecrack-tipplasticzoneissmallcomparedtothecracksize,specimenthickness,andligamentaheadofthecrack.VariationinthevalueofKIccanbeexpectedwithintheallowablerangeofspecimenproportions,a/WandW/B.KIcmayalsobeexpectedtorisewithincreasingligamentsize.Notwithstandingthesevariations,however,KIcisbelievedtorepresentalowerlimitingvalueoffracturetoughness(for2%apparentcrackextension)intheenvironmentandatthespeedandtemperatureofthetest.LowervaluesofKIccanbeobtainedformaterialsthatfailbycleavagefracture;forexample,ferriticsteelsintheductile-to-brittletransitionregionorbelow,wherethecrackfrontlengthaffectsthemeasurementinastochasticmannerindependentofcrackfrontconstraint.ThepresenttestmethoddoesnotapplytosuchmaterialsandtheuserisreferredtoTestMethodE1921andE1820E1820.Likewisethistestmethoddoesnotapplytohightoughnessorhightearing-resistancematerialswhosefailureisaccompaniedbyappreciableamountsofplasticity.Guidanceontestingelastic-plasticmaterialsisgiveninTestMethodE1820.ThevalueofKIcobtainedbythistestmethodmaybeusedtoestimatetherelationbetweenfailurestressandcracksizeforamaterialinservicewhereintheconditionsofhighconstraintdescribedabovewouldbeexpected.BackgroundinformationconcerningthebasisfordevelopmentofthistestmethodintermsoflinearelasticfracturemechanicsmaybefoundinRefs(1)and(3).CyclicforcescancausecrackextensionatKIvalueslessthanKIc.Crackextensionundercyclicorsustainedforces(asbystresscorrosioncrackingorcreepcrackgrowth)canbeinfluencedbytemperatureandenvironment.Therefore,whenKIcisappliedtothedesignofservicecomponents,differencesbetweenlaboratorytestandfieldconditionsshallbeconsidered.Plane-strainfracturetoughnesstestingisunusualinthattherecanbenoadvanceassurancethatavalidKIcwillbedeterminedinaparticulartest.Therefore,compliancewiththespecifiedvaliditycriteriaofthistestmethodisessential.ResidualstressescanadverselyaffecttheindicatedKQandKIcvalues.Theeffectcanbeespeciallysignificantforspecimensremovedfromas-heattreatedorotherwisenon-stressrelievedstock,fromweldments,fromcomplexwroughtparts,orfrompartswithintentionallyinducedresidualstresses.Indicationsofresidualstressincludedistortionduringspecimenmachining,resultsthatarespecimenconfigurationdependent,andirregularfatigueprecrackgrowth(eitherexcessivecrackfrontcurvatureorout-of-planegrowth).GuideB9......
【中国标准分类号】:H22
【国际标准分类号】:77_040_10
【页数】:33P.;A4
【正文语种】:
【英文标准名称】:StandardTestMethodforVinylandTransUnsaturationinPolyethylenebyInfraredSpectrophotometry
【原文标准名称】:用红外线分光光度法对乙烯基和横相不饱和性的标准试验方法
【标准号】:ASTMD6248-1998(2004)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:D20.70
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:红外分光光度法;聚乙烯;横向乙烯集不饱和性;乙烯基不饱和
【英文主题词】:FTIR;infraredspectrophotometry;polyethylene;transvinyleneunsaturation;vinylunsaturation
【摘要】:Therearethreetypesofolefinicgroupspresentinsufficientconcentrationstowarrantconsideration,oneormoreofthatcannormallybefoundinanypolyethylene.Thethreetypesaretrans-vinylene,R-CH=CH-Rx2032;,sometimesreferredtoastrans-internalunsaturation;vinylideneorpendentmethylene,RRx2032;C-CH2;andvinylunsaturation,R-CH=CH2,alsoreferredtoasterminalunsaturation.Thetypeandquantityofthesegroupscaninfluencethechemicalandphysicalpropertiesoftheresin.Informationconcerningtheirpresencemayalsobeusedtocharacterizeoridentifyunknownresinsorblendsofresins.Additivesmayinterferewithunsaturationmeasurements.Theuseiscautionedtodeterminewhichadditivesarepresentandifthereanyabsorbancebandscausedbyadditivepresencethatoverlaporinterferewithunsaturationabsorbancebandsusedinthistestmethodintherangeof1050to850cmx2013;1.Ifoverlappingbandsoccur,themethodisnotapplicable.Interferencefringesresultingfromsmoothsamplesurfacescancausemeasurementerrors.Thistestmethodrequirestheuseofaluminumfoilinthecompressionmoldingofsamplestoprovideanadequatelyroughsurfacetominimizeinterferencefringes.1.1Thistestmethodcoversmosttypesofpolyethylene,thoseethyleneplasticsconsistingofethyleneand-olefincomonomerslongerthanpropylene,andblendsoftheaboveinanyratio.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardsstatementsaregiveninSection8.Note18212;ThereisnosimilarorequivalentISOstandard.
【中国标准分类号】:G16
【国际标准分类号】:83_080_20
【页数】:3P.;A4
【正文语种】:
【原文标准名称】:金属材料的线性弹性平面变形断裂韧度KIc用标准试验方法
【标准号】:ASTME399-2009e2
【标准状态】:现行
【国别】:
【发布日期】:2009
【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】:E08.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:半制成品;疲劳;金属和金属材料
【英文主题词】:Fabricatedmaterials;Fatigue;Metalsandmetallicmaterials
【摘要】:ThepropertyKIcdeterminedbythistestmethodcharacterizestheresistanceofamaterialtofractureinaneutralenvironmentinthepresenceofasharpcrackunderessentiallylinear-elasticstressandseveretensileconstraint,suchthat(1)thestateofstressnearthecrackfrontapproachestritensileplanestrain,and(2)thecrack-tipplasticzoneissmallcomparedtothecracksize,specimenthickness,andligamentaheadofthecrack.VariationinthevalueofKIccanbeexpectedwithintheallowablerangeofspecimenproportions,a/WandW/B.KIcmayalsobeexpectedtorisewithincreasingligamentsize.Notwithstandingthesevariations,however,KIcisbelievedtorepresentalowerlimitingvalueoffracturetoughness(for2%apparentcrackextension)intheenvironmentandatthespeedandtemperatureofthetest.LowervaluesofKIccanbeobtainedformaterialsthatfailbycleavagefracture;forexample,ferriticsteelsintheductile-to-brittletransitionregionorbelow,wherethecrackfrontlengthaffectsthemeasurementinastochasticmannerindependentofcrackfrontconstraint.ThepresenttestmethoddoesnotapplytosuchmaterialsandtheuserisreferredtoTestMethodE1921andE1820E1820.Likewisethistestmethoddoesnotapplytohightoughnessorhightearing-resistancematerialswhosefailureisaccompaniedbyappreciableamountsofplasticity.Guidanceontestingelastic-plasticmaterialsisgiveninTestMethodE1820.ThevalueofKIcobtainedbythistestmethodmaybeusedtoestimatetherelationbetweenfailurestressandcracksizeforamaterialinservicewhereintheconditionsofhighconstraintdescribedabovewouldbeexpected.BackgroundinformationconcerningthebasisfordevelopmentofthistestmethodintermsoflinearelasticfracturemechanicsmaybefoundinRefs(1)and(3).CyclicforcescancausecrackextensionatKIvalueslessthanKIc.Crackextensionundercyclicorsustainedforces(asbystresscorrosioncrackingorcreepcrackgrowth)canbeinfluencedbytemperatureandenvironment.Therefore,whenKIcisappliedtothedesignofservicecomponents,differencesbetweenlaboratorytestandfieldconditionsshallbeconsidered.Plane-strainfracturetoughnesstestingisunusualinthattherecanbenoadvanceassurancethatavalidKIcwillbedeterminedinaparticulartest.Therefore,compliancewiththespecifiedvaliditycriteriaofthistestmethodisessential.ResidualstressescanadverselyaffecttheindicatedKQandKIcvalues.Theeffectcanbeespeciallysignificantforspecimensremovedfromas-heattreatedorotherwisenon-stressrelievedstock,fromweldments,fromcomplexwroughtparts,orfrompartswithintentionallyinducedresidualstresses.Indicationsofresidualstressincludedistortionduringspecimenmachining,resultsthatarespecimenconfigurationdependent,andirregularfatigueprecrackgrowth(eitherexcessivecrackfrontcurvatureorout-of-planegrowth).GuideB9......
【中国标准分类号】:H22
【国际标准分类号】:77_040_10
【页数】:33P.;A4
【正文语种】:
【英文标准名称】:StandardTestMethodforVinylandTransUnsaturationinPolyethylenebyInfraredSpectrophotometry
【原文标准名称】:用红外线分光光度法对乙烯基和横相不饱和性的标准试验方法
【标准号】:ASTMD6248-1998(2004)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:D20.70
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:红外分光光度法;聚乙烯;横向乙烯集不饱和性;乙烯基不饱和
【英文主题词】:FTIR;infraredspectrophotometry;polyethylene;transvinyleneunsaturation;vinylunsaturation
【摘要】:Therearethreetypesofolefinicgroupspresentinsufficientconcentrationstowarrantconsideration,oneormoreofthatcannormallybefoundinanypolyethylene.Thethreetypesaretrans-vinylene,R-CH=CH-Rx2032;,sometimesreferredtoastrans-internalunsaturation;vinylideneorpendentmethylene,RRx2032;C-CH2;andvinylunsaturation,R-CH=CH2,alsoreferredtoasterminalunsaturation.Thetypeandquantityofthesegroupscaninfluencethechemicalandphysicalpropertiesoftheresin.Informationconcerningtheirpresencemayalsobeusedtocharacterizeoridentifyunknownresinsorblendsofresins.Additivesmayinterferewithunsaturationmeasurements.Theuseiscautionedtodeterminewhichadditivesarepresentandifthereanyabsorbancebandscausedbyadditivepresencethatoverlaporinterferewithunsaturationabsorbancebandsusedinthistestmethodintherangeof1050to850cmx2013;1.Ifoverlappingbandsoccur,themethodisnotapplicable.Interferencefringesresultingfromsmoothsamplesurfacescancausemeasurementerrors.Thistestmethodrequirestheuseofaluminumfoilinthecompressionmoldingofsamplestoprovideanadequatelyroughsurfacetominimizeinterferencefringes.1.1Thistestmethodcoversmosttypesofpolyethylene,thoseethyleneplasticsconsistingofethyleneand-olefincomonomerslongerthanpropylene,andblendsoftheaboveinanyratio.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardsstatementsaregiveninSection8.Note18212;ThereisnosimilarorequivalentISOstandard.
【中国标准分类号】:G16
【国际标准分类号】:83_080_20
【页数】:3P.;A4
【正文语种】:
