DIN EN 60601-2-4 Berichtigung 2-2005 医用电气设备.第2-4部分:心脏除颤器安全的特殊要求
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【英文标准名称】:Medicalelectricalequipment-Part2-4:Particularrequirementsforthesafetyofcardiacdefibrillators(IEC60601-2-4:2002);GermanversionEN60601-2-4:2003,CorrigendatoDINEN60601-2-4(VDE0750-2-4):2003-07
【原文标准名称】:医用电气设备.第2-4部分:心脏除颤器安全的特殊要求
【标准号】:DINEN60601-2-4Berichtigung2-2005
【标准状态】:作废
【国别】:德国
【发布日期】:2005-11
【实施或试行日期】:
【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】:试验条件;去纤颤器;安全;医疗设备;医用电气设备;电气工程;安全要求;监视器;设备安全;规范(验收);医学科学;定义;电气器具;电医学;安全工程
【英文主题词】:Defibrillators;Definition;Definitions;Electricappliances;Electricalengineering;Electricalmedicalequipment;Electromedicine;Equipmentsafety;Medicalequipment;Medicalsciences;Monitors;Safety;Safetyengineering;Safetyrequirements;Specification(approval);Testingconditions
【摘要】:
【中国标准分类号】:C39
【国际标准分类号】:11_040_10
【页数】:2P.;A4
【正文语种】:德语
【英文标准名称】:StandardPracticeforConstant-Amplitude,Axial,Tension-TensionCyclicFatigueofContinuousFiber-ReinforcedAdvancedCeramicsatAmbientTemperatures
【原文标准名称】:连续纤维增强高级陶瓷在环境温度下的恒幅轴向张力循环疲劳性能测定的标准实施规程
【标准号】:ASTMC1360-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:C28.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:ceramicmatrixcomposite;CFCC;continuousfiberceramiccomposite;cyclicfatigue;S-Ncurve;tension-tensioncyclicfatigue;:Advancedceramics;Ceramiccomposites;CFCC(continuousfiber-reinforcedceramiccomposite);Continuousfiber-reinforcedceram
【摘要】:Thispracticemaybeusedformaterialdevelopment,materialcomparison,qualityassurance,characterization,reliabilityassessment,anddesigndatageneration.Continuousfiber-reinforcedceramicmatrixcompositesaregenerallycharacterizedbycrystallinematricesandceramicfiberreinforcements.Thesematerialsarecandidatematerialsforstructuralapplicationsrequiringhighdegreesofwearandcorrosionresistance,andhigh-temperatureinherentdamagetolerance(thatis,toughness).Inaddition,continuousfiber-reinforcedglassmatrixcompositesarecandidatematerialsforsimilarbutpossiblyless-demandingapplications.Althoughflexuraltestmethodsarecommonlyusedtoevaluatethemechanicalbehaviorofmonolithicadvancedceramics,thenon-uniformstressdistributioninaflexuraltestspecimeninadditiontodissimilarmechanicalbehaviorintensionandcompressionforCFCCsleadstoambiguityofinterpretationoftestresultsobtainedinflexureforCFCCs.Uniaxially-loadedtensiletestsprovideinformationonmechanicalbehaviorforauniformlystressedmaterial.ThecyclicfatiguebehaviorofCFCCscanhaveappreciablenon-lineareffects(forexample,slidingoffiberswithinthematrix)whichmayberelatedtotheheattransferofthespecimentothesurroundings.Changesintesttemperature,frequency,andheatremovalcanaffecttestresults.Itmaybedesirabletomeasuretheeffectsofthesevariablestomorecloselysimulateend-useconditionsforsomespecificapplication.CyclicfatiguebyitsnatureisaprobabilisticphenomenonasdiscussedinSTP91A(Ref(1))andSTP588(Ref(2)).Inaddition,thestrengthsofthebrittlematricesandfibersofCFCCsareprobabilisticinnature.Therefore,asufficientnumberoftestspecimensateachtestingconditionisrequiredforstatisticalanalysisanddesign,withguidelinesforsufficientnumbersprovidedinSTP91A(Ref(1)),STP588(Ref(2)),andPracticeE739.StudiestodeterminetheinfluenceoftestspecimenvolumeorsurfaceareaoncyclicfatiguestrengthdistributionsforCFCCshavenotbeencompleted.Themanydifferenttensiletestspecimengeometriesavailableforcyclicfatiguetestingmayresultinvariationsinthemeasuredcyclicfatiguebehaviorofaparticularmaterialduetodifferencesinthevolumeofmaterialinthegagesectionofthetestspecimens.Tensilecyclicfatiguetestsprovideinformationonthematerialresponseunderfluctuatinguniaxialtensilestresses.Uniformstressstatesarerequiredtoeffectivelyevaluateanynonlinearstress-strainbehaviorwhichmaydevelopastheresultofcumulativedamageprocesses(forexample,matrixmicrocracking,fiber/matrixdebonding,delamination,cyclicfatiguecrackgrowth,etc.)Cumulativedamageduetocyclicfatiguemaybeinfluencedbytestingmode,testingrate(relatedtofrequency),differencesbetweenmaximumandminimumforce(Rorx0391;),effectsofprocessingorcombinationsofconstituentmaterials,and/orenvironmentalinfluences(includingtestenvironmentandpre-testconditioning),orboth.Someoftheseeffectsmaybeconsequencesofstresscorrosionorsubcritical(slow)crackgrowthwhichcanbedifficulttoquantify.Otherfactorswhichmayinfluencecyclicfatiguebehaviorare:matrixorfibermaterial,voidorporositycontent,methodsoftestspecimenpreparationorfabrication,volumepercentofthereinforcement,orientationandstackingofthereinforcement,testspecimenconditioning,testenvironment,forceorstrainlimitsduringcycling,waveshapes(thatis,sinusoidal,trapezoidal,etc.),andfailuremodeoftheCFCC.Theresultsofcyclic.......
【中国标准分类号】:Q32
【国际标准分类号】:81_060_30
【页数】:9P.;A4
【正文语种】:英语
基本信息
标准名称: | 气象科技成果鉴定规程 |
英文名称: | Procedure for appraisal of the achievements in meteorological science and technology |
中标分类: |
综合 >>
基础学科 >>
气象学 |
ICS分类: |
数学、自然科学 >>
地质学、气象学、水文学
|
发布部门: | 中国气象局 |
发布日期: | 2005-12-21 |
实施日期: | 2006-06-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
归口单位: | 中国气象局法规司 |
起草单位: | 中国气象局法规司 |
出版日期: | 1900-01-01 |
页数: | 16开, 页数:52, 字数:92千字 |
适用范围
本标准规定了气象科技成果鉴定工作的工作程序、基本要求、表格试样;规定了实施气象科技成果鉴定工作有关单位和个人的权利与义务。本标准适用于干气象行业的气象科技成果鉴定工作。
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所属分类: 综合 基础学科 气象学 数学 自然科学 地质学 气象学 水文学