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DIN EN 170-2003 个人眼睛防护.紫外线滤光镜.透射要求和推荐用法;德文版本EN170:2002

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【英文标准名称】:Personaleyeprotection-Ultravioletfilters-Transmittancerequirementsandrecommendeduse;GermanversionEN170:2002
【原文标准名称】:个人眼睛防护.紫外线滤光镜.透射要求和推荐用法;德文版本EN170:2002
【标准号】:DINEN170-2003
【标准状态】:现行
【国别】:德国
【发布日期】:2003-01
【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】:过滤器;防护级别;紫外(线)防护滤色片;减弱程度;护目器;规范(验收);护目设备;辐射防护;事故预防;职业安全;紫外线辐射;尺寸;滤光镜(护目);测量不确定度;紫外(线)滤色片;放射源;安全工程;防护服装;传输性能;光透射率;波
【英文主题词】:
【摘要】:ThisEuropeanStandardspecifiesthescalenumbersandtransmittancerequirementsforfiltersforprotectionagainstultravioletradiation.TheotherapplicablerequirementsforthesetypesoffiltersaregiveninEN166:1995.GuidanceontheselectionanduseofthesefiltersaregiveninAnnexA.
【中国标准分类号】:C73
【国际标准分类号】:13_340_20
【页数】:13P;A4
【正文语种】:德语


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【英文标准名称】:StandardGuideforStatisticalAnalysisofAcceleratedServiceLifeData
【原文标准名称】:加速使用寿命数据统计分析的标准指南
【标准号】:ASTMG172-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:G03.08
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:statistical;devloping;life;data;stress;measurement
【摘要】:Thenatureofacceleratedservicelifeestimationnormallyrequiresthatstresseshigherthanthoseexperiencedduringserviceconditionsareappliedtothematerialbeingevaluated.Fornon-constantusestress,suchasexperiencedbytimevaryingweatheroutdoors,itmayinfactbeusefultochooseanacceleratedstressfixedatalevelslightlylowerthan(say90%of)themaximumexperiencedoutdoors.Bycontrollingallvariablesotherthantheoneusedforacceleratingdegradation,onemaymodeltheexpectedeffectofthatvariableatnormal,orusageconditions.Iflaboratoryacceleratedtestdevicesareused,itisessentialtoprovideprecisecontrolofthevariablesusedinordertoobtainusefulinformationforservicelifeprediction.Itisassumedthatthesamefailuremechanismoperatingatthehigherstressisalsothelifedeterminingmechanismattheusagestress.Itmustbenotedthatthevalidityofthisassumptioniscrucialtothevalidityofthefinalestimate.Acceleratedservicelifetestdataoftenshowdifferentdistributionshapesthanmanyothertypesofdata.Thisisduetotheeffectsofmeasurementerror(typicallynormallydistributed),combinedwiththoseuniqueeffectswhichskewservicelifedatatowardsearlyfailuretime(infantmortalityfailures)orlatefailuretimes(agingorwear-outfailures).Applicationsoftheprinciplesinthisguidecanbehelpfulinallowinginvestigatorstointerpretsuchdata.Thechoiceanduseofaparticularaccelerationmodelandlifedistributionmodelshouldbebasedprimarilyonhowwellitfitsthedataandwhetheritleadstoreasonableprojectionswhenextrapolatingbeyondtherangeofdata.Furtherjustificationforselectingmodelsshouldbebasedontheoreticalconsiderations.Note28212;Acceleratedservicelifeorreliabilitydataanalysispackagesarebecomingmorereadilyavailableincommoncomputersoftwarepackages.Thismakesdatareductionandanalysesmoredirectlyaccessibletoagrowingnumberofinvestigators.Thisisnotnecessarilyagoodthingastheabilitytoperformthemathematicalcalculation,withoutthefundamentalunderstandingofthemechanicsmayproducesomeseriouserrors.SeeRef(1).31.1Thisguidebrieflypresentssomegenerallyacceptedmethodsofstatisticalanalysesthatareusefulintheinterpretationofacceleratedservicelifedata.Itisintendedtoproduceacommonterminologyaswellasdevelopingacommonmethodologyandquantitativeexpressionsrelatingtoservicelifeestimation.1.2ThisguidecoverstheapplicationoftheArrheniusequationtoservicelifedata.Itservesasageneralmodelfordeterminingratesatusageconditions,suchastemperature.Itservesasageneralguidefordeterminingservicelifedistributionatusagecondition.Italsocoversapplicationswheremorethanonevariableactsimultaneouslytoaffecttheservicelife.Forthepurposesofthisguide,theaccelerationmodelusedformultiplestressvariablesistheEyringModel.Thismodelwasderivedfromthefundamentallawsofthermodynamicsandhasbeenshowntobeusefulformodelingsometwovariableacceleratedservicelifedata.Itcanbeextendedtomorethantwovariables.1.3Onlythosestatisticalmethodsthathavefoundwideacceptanceinservicelifedataanalyseshavebeenconsideredinthisguide.1.4TheWeibulllifedistributionisemphasizedinthisguideandexamplecalculationsofsituationscommonlyencounteredinanalysisofservicelifedataarecoveredindetail.ItistheintentionofthisguidethatitbeusedinconjunctionwithGuideG166.1.5Theaccuracyofthemodelbecomesmorecriticalasthenumberofvariablesincreasesand/ortheextentofextrapolationfromtheacceleratedstres......
【中国标准分类号】:J04
【国际标准分类号】:03_120_30
【页数】:12P.;A4
【正文语种】:


【英文标准名称】:Inspectors'manualforescalatorsandmovingwalks;Addenda
【原文标准名称】:自动电梯和移动梯的检验手册.补充件
【标准号】:ASMEA17.2.3bAddenda-1997
【标准状态】:作废
【国别】:美国
【发布日期】:1997
【实施或试行日期】:
【发布单位】:美国机械工程师协会(ASME)
【起草单位】:ASME
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;安全要求;检验;手册;提升机;维修;自动电梯
【英文主题词】:escalators;safetyrequirements;handbooks;inspection;testing;maintenance;hoists
【摘要】:
【中国标准分类号】:Q78
【国际标准分类号】:91_140_90
【页数】:66P;A4
【正文语种】:英语