ASTM E166-1960 (1970) 办公室工作用办公设备适用性标准分类

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【英文标准名称】:StandardTestMethodforMeasurementofHydrogenEmbrittlementThresholdinSteelbytheIncrementalStepLoadingTechnique
【原文标准名称】:用增长载荷技术测量钢中氢脆性的标准试验方法
【标准号】:ASTMF1624-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:F07.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:合金;敏感性测定;脆裂;氢;氢脆;金属材料;金属;钢;试验;时间
【英文主题词】:decreasingloadingrate;delayedbrittlefailure;displacementcontrol;hydrogenembrittlementthreshold;hydrogeninducedstresscracking;risingstepload;slowstrainrate
【摘要】:Thistestmethodisusedforresearch,design,serviceevaluation,manufacturingcontrol,anddevelopment.Thistestmethodquantitativelymeasuresstressparametersthatareusedinadesignorfailureanalysisthattakesintoaccounttheeffectsofenvironmentalexposureincludingthatwhichoccursduringprocessing,suchasplating(8)(ASTMSTP962).Forplatingprocesses,thevalueofx03C3;th-IHEisusedtospecifyquantitativelythemaximumoperatingstressforagivenstructureorproduct.Forqualitycontrolpurposes,anacceleratedtestisdevisedthatusesaspecifiedloadingrate,whichisequaltoorlowerthantheloadingratenecessarytodeterminethethresholdstress(see8.1).Forfasteners,thevalueofx03C3;th-IHEisusedtospecifyquantitativelythemaximumstressduringinstallationandinservicetoavoidprematurefailurecausedbyresidualhydrogeninthesteelasaresultofprocessing.Forfasteners,thevalueofx03C3;th-EHEisusedtospecifyquantitativelythemaximumstressduringinstallationandinservicetoavoidfailurefromhydrogenabsorbedduringexposuretoaspecificenvironment.Tomeasuretherelativesusceptibilityofsteelstohydrogenpickupfromvariousfabricationprocesses,asingle,selected,discriminatingrateisusedtoranktheresistanceofvariousmaterialstohydrogenembrittlement.1.1Thistestmethodestablishesaproceduretomeasurethesusceptibilityofsteeltoatime-delayedfailuresuchasthatcausedbyhydrogen.Itdoessobymeasuringthethresholdfortheonsetofsubcriticalcrackgrowthusingstandardfracturemechanicsspecimens,irregular-shapedspecimenssuchasnotchedroundbars,oractualproductsuchasfasteners()(threadedorunthreaded)springsorcomponentsasidentifiedinSAEJ78,J81,andJ1237.1.2Thistestmethodisusedtoevaluatequantitatively:1.2.1Therelativesusceptibilityofsteelsofdifferentcompositionorasteelwithdifferentheattreatments;1.2.2Theeffectofresidualhydrogeninthesteelasaresultofprocessing,suchasmelting,thermalmechanicalworking,surfacetreatments,coatings,andelectroplating;1.2.3Theeffectofhydrogenintroducedintothesteelcausedbyexternalenvironmentalsourcesofhydrogen,suchasfluidsandcleanersmaintenancechemicals,petrochemicalproducts,andgalvaniccouplinginanaqueousenvironment.1.3Thetestisperformedeitherinair,tomeasuretheeffectifresidualhydrogenisinthesteelbecauseoftheprocessing(IHE),orinacontrolledenvironment,tomeasuretheeffectofhydrogenintroducedintothesteelasaresultoftheexternalsourcesofhydrogen(EHE)asdetailedinASTMSTP543.1.4Thevaluesstatedinacceptableinch-poundunitsshallberegardedasthestandard.Thevaluesstatedinmetricunitsmaynotbeexactequivalents.Conversionoftheinch-poundunitsbyappropriateconversionfactorsisrequiredtoobtainexactequivalence.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H22
【国际标准分类号】:77_040_10
【页数】:6P.;A4
【正文语种】:


【英文标准名称】:Railwayapplications-Rollingstockequipment-Capacitorsforpowerelectronics-Part1:Paper/plasticfilmcapacitors(IEC61881-1:2010);GermanversionEN61881-1:2011
【原文标准名称】:铁路设施.铁道车辆设备.电力电子设备用电容器.第1部分:纸/塑料膜电容器(IEC61881-1-2010);德文版本EN61881-1-2011
【标准号】:DINEN61881-1-2011
【标准状态】:现行
【国别】:德国
【发布日期】:2011-07
【实施或试行日期】:2011-07-01
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Alternatingcurrentcapacitors;Capacitors;Condenserunit;Definitions;Directvoltage;Electricrailways;Electricalcomponents;Electricalengineering;Electricalequipment;Electronicequipmentandcomponents;Erection;Inscription;Measurement;Measuringtechniques;Mechanicaltesting;Operatingfrequencies;Operation;Overload;Powercapacitors;Powerelectronics;Qualificationtests;Qualityrequirements;Railwayapplications;Railwayvehicles;Railways;Ratedvoltages;Rollingstocks;Safetyrequirements;Testing;Testingrequirements;Voltagemeasurement
【摘要】:
【中国标准分类号】:
【国际标准分类号】:31_060_70;45_060_01
【页数】:54P.;A4
【正文语种】:德语