BS EN ISO 15011-3-2002 焊接和相关工艺的卫生和安全.电弧焊产生的烟气取样的实验室法.用固定点测量法测定臭氧浓度
时间:2024-05-10 02:34:00 来源: 标准资料网 作者：标准资料网 阅读：8408
【英文标准名称】:Healthandsafetyinweldingandalliedprocesses-Laboratorymethodforsamplingfumeandgasesgeneratedbyarcwelding-Determinationofozoneconcentrationusingfixedpointmeasurements
【原文标准名称】:焊接和相关工艺的卫生和安全.电弧焊产生的烟气取样的实验室法.用固定点测量法测定臭氧浓度
【标准号】:BSENISO15011-3-2002
【标准状态】:作废
【国别】:英国
【发布日期】:2002-12-13
【实施或试行日期】:2002-12-13
【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】:空气污染;烟;排放;电弧焊接;化学分析和试验;自然工作条件;实验室试验;焊接;测定;职业安全;定义;抽样方法;保健;臭氧浓度;检测点;排放测量;气体;颗粒物质的测定
【英文主题词】:definitions;gases;welding;pollutantgases;healthprotection;occupationalsafety;emissions;arcwelding;checkpoint;ozone;laboratorytesting;dustmeasurement;smoke;definition;analysis;particulatemattermeasurement;measuringtechniques;respiratoryprotections;emissionmeasurement;samplingmethods;airpollution;determination;workingconditions(physical);ozoneconcentration;chemicalanalysisandtesting
【摘要】:
【中国标准分类号】:J33
【国际标准分类号】:25_160_10;13_040_40
【页数】:16P.;A4
【正文语种】:英语
【英文标准名称】:Telecommunications–ISDNManagement–OverviewandPrinciples
【原文标准名称】:电信.综合业务数字网管理.概述和原理
【标准号】:ANSIT1.219-1991
【标准状态】:现行
【国别】:美国
【发布日期】:1991-01-01
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ATIS
【标准类型】:()
【标准水平】:()
【中文主题词】:综合业务数字网;电信
【英文主题词】:ISDN;Telecommunication;Telecommunications
【摘要】:ThisstandardprovidesanoverviewofthesetofstandardonmanagementoperationsforIntegratedServicesDigitalNetworks(ISDNs)andestablishestheprinciplesforthemaintenanceandoperationsneededforoverallmanagementofISDNs.Thisdocumentpr
【中国标准分类号】:M11
【国际标准分类号】:33_080
【页数】:25P.;A4
【正文语种】:英语
【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