BS EN ISO 14556-2000 钢.夏比V形切口摆式冲击试验.仪器试验法
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来源:标准资料网
【英文标准名称】:Steel-CharpyV-notchpendulumimpacttest-Instrumentedtestmethod
【原文标准名称】:钢.夏比V形切口摆式冲击试验.仪器试验法
【标准号】:BSENISO14556-2000
【标准状态】:现行
【国别】:英国
【发布日期】:2000-08-15
【实施或试行日期】:2000-08-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:摆式冲击试验;测量仪器;冲击试验;力的测量;钢;试验设备;试样;挠曲试验;机械试验
【英文主题词】:Calibration;Charpy;Charpyimpacttests;Definition;Definitions;Deflection;Impacttesting;Impacttests;Impactvalue;Interpretations;Materialtestingmachines;Materials;Materialstesting;Measurement;Measuringequipment;Mechanicaltesting;Notched-barimpactbendingtests;Samples;Samplingmethods;Steels;Testequipment;Testperformance;Testreports;Testspecimens;Testing
【摘要】:ThisInternationalStandardspecifiesamethodofinstrumentedCharpyV-notchpendulumimpacttestingonsteelproductsandtherequirementsconcerningthemeasurementandrecordingequipment.ThisInternationalStandardcanbeappliedtoothermetallicmaterialsbyagreement.Thistestprovidesfurtherinformationonthefracturebehaviourofthetestedproduct.
【中国标准分类号】:H11
【国际标准分类号】:77_040_10
【页数】:28P.;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforNaI(Tl)Gamma-RaySpectrometryofWater
【原文标准名称】:用NaI(TI)γ射线光谱法处理水的标准实施规程
【标准号】:ASTMD4962-2002(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:D19.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:gammapulseheightanalysis;gammarayspectrometry;multichannelanalyzer;sodiumiodidedetector;Calibration--wateranalysisinstrumentation;Gammaradiation--water;Gamma-rayspectrometry;Multichannelanalyzer;Radioactivewateranalysis;Radionuclid
【摘要】:Gamma-rayspectrometryisusedtoidentifyradionuclidesandtomakequantitativemeasurements.Useofacomputerandalibraryofstandardspectrawillberequiredforquantitativeanalysisofcomplexmixturesofnuclides.Variationofthephysicalgeometryofthesampleanditsrelationshipwiththedetectorwillproducebothqualitativeandquantitativevariationsinthegamma-rayspectrum.Toadequatelyaccountforthesegeometryeffects,calibrationsaredesignedtoduplicateallconditionsincludingsource-to-detectordistance,sampleshapeandsize,andsamplematrixencounteredwhensamplesaremeasured.Thismeansthatacompletesetoflibrarystandardsmayberequiredforeachgeometryandsampletodetectordistancecombinationthatwillbeused.Sincesomespectrometrysystemsarecalibratedatmanydiscretedistancesfromthedetector,awiderangeofactivitylevelscanbemeasuredonthesamedetector.Forhigh-levelsamples,extremelylowefficiencygeometriesmaybeused.Quantitativemeasurementscanbemadeaccuratelyandpreciselywhenhighactivitylevelsamplesareplacedatdistancesof1mormorefromthedetector.Electronicproblems,suchaserroneousdeadtimecorrection,lossofresolution,andrandomsumming,maybeavoidedbykeepingthegrosscountratebelow2000countspersecondandalsokeepingthedeadtimeoftheanalyzerbelow5%.Totalcountingtimeisgovernedbytheactivityofthesample,thedetectorsourcedistance,andtheacceptablePoissoncountinguncertainty.1.1Thispracticecoversthemeasurementofradionuclidesinwaterbymeansofgamma-rayspectrometry.Itisapplicabletonuclidesemittinggamma-rayswithenergiesgreaterthan50keV.Fortypicalcountingsystemsandsampletypes,activitylevelsofabout40Bq(1080pCi)areeasilymeasuredandsensitivitiesofabout0.4Bq(11pCi)arefoundformanynuclides(1-10).Countratesinexcessof2000countspersecondshouldbeavoidedbecauseofelectroniclimitations.Highcountratesamplescanbeaccommodatedbydilutionorbyincreasingthesampletodetectordistance.1.2Thispracticecanbeusedforeitherquantitativeorrelativedeterminations.Intracerwork,theresultsmaybeexpressedbycomparisonwithaninitialconcentrationofagivennuclidewhichistakenas100%.Forradioassay,theresultsmaybeexpressedintermsofknownnuclidicstandardsfortheradionuclidesknowntobepresent.Inadditiontothequantitativemeasurementofgamma-rayactivity,gamma-rayspectrometrycanbeusedfortheidentificationofspecificgamma-rayemittersinamixtureofradionuclides.Generalinformationonradioactivityandthemeasurementofradiationhasbeenpublished(11and12).Informationonspecificapplicationofgamma-rayspectrometryisalsoavailableintheliterature(13-16).1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_30
【页数】:8P.;A4
【正文语种】:英语
【英文标准名称】:Documentmanagement-Part2:Metadataelementsandinformationreferencemodel
【原文标准名称】:文件管理.第2部分:元数据元素和信息参考模型
【标准号】:IEC82045-2-2004
【标准状态】:现行
【国别】:国际
【发布日期】:2004-12
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC3
【标准类型】:()
【标准水平】:()
【中文主题词】:参考文献;参考模型;形式描述;数据元;文献集;数据管理;电子数据交换;信息模式;标引;可扩展标记语言;元数据;程序设计语言;XML;信息;文献;数据交换;信息交换;文献工作;数据记录;定义
【英文主题词】:Bibliographicreferences;Dataelements;Dataexchange;Datamanagement;Datarecords;Definitions;Documentations;Documents;ElectronicDataInterchange;EXPRESS;ExtensibleMarkupLanguage;Formaldescription;Indexing;Information;Informationinterchange;Informationmodels;Markuplanguage;Metadata;Programminglanguages;Referencemodel;Setsofdocuments;XML
【摘要】:Providesacomprehensivesetofstandardizedmetadataelementsfordocumentmanagement.IncludesastandardizedEXPRESS-basedinformationreferencemodel.Providesastandardizedframeworkfordataexchangeandabasisfortheimplementationofadocumen
【中国标准分类号】:L72
【国际标准分类号】:01_110;35_240_30
【页数】:218P.;A4
【正文语种】:英语
