【英文标准名称】:StandardPracticeforOperatingXenonArcLightApparatusforExposureofNon-MetallicMaterials
【原文标准名称】:非金属材料曝光用氙弧光仪器操作的标准实施规程
【标准号】:ASTMG155-2005a
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:G03.03
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:氙弧灯;非金属的;耐气候老化;人工气候环境试验
【英文主题词】:accelerated;acceleratedweathering;durability;exposure;laboratoryweathering;light;lightfastness;non-metallicmaterials;temperature;ultraviolet;weathering;xenonarc
【摘要】:Theuseofthisapparatusisintendedtoinducepropertychangesassociatedwiththeenduseconditions,includingtheeffectsofsunlight,moisture,andheat.Theseexposuresmayincludeameanstointroducemoisturetothetestspecimen.Exposuresarenotintendedtosimulatethedeteriorationcausedbylocalizedweatherphenomena,suchasatmosphericpollution,biologicalattack,andsaltwaterexposure.Alternatively,theexposuremaysimulatetheeffectsofsunlightthroughwindowglass.Typically,theseexposureswouldincludemoistureintheformofhumidity.Note28212;Caution:RefertoPracticeG151forfullcautionaryguidanceapplicabletoalllaboratoryweatheringdevices.Variationinresultsmaybeexpectedwhenoperatingconditionsarevariedwithintheacceptedlimitsofthispractice.Therefore,noreferenceshallbemadetoresultsfromtheuseofthispracticeunlessaccompaniedbyareportdetailingthespecificoperatingconditionsinconformancewiththeReportSection.5.2.1Itisrecommendedthatasimilarmaterialofknownperformance(acontrol)beexposedsimultaneouslywiththetestspecimentoprovideastandardforcomparativepurposes.Itisrecommendedthatatleastthreereplicatesofeachmaterialevaluatedbeexposedineachtesttoallowforstatisticalevaluationofresults.1.1Thispracticecoversthebasicprinciplesandoperatingproceduresforusingxenonarclightandwaterapparatusintendedtoreproducetheweatheringeffectsthatoccurwhenmaterialsareexposedtosunlight(eitherdirectorthroughwindowglass)andmoistureasrainordewinactualuse.Thispracticeislimitedtotheproceduresforobtaining,measuring,andcontrollingconditionsofexposure.Anumberofexposureproceduresarelistedinanappendix;however,thispracticedoesnotspecifytheexposureconditionsbestsuitedforthematerialtobetested.Note18212;PracticeG151describesperformancecriteriaforallexposuredevicesthatuselaboratorylightsources.ThispracticereplacesPracticeG26,whichdescribesveryspecificdesignsfordevicesusedforxenon-arcexposures.TheapparatusdescribedinPracticeG26iscoveredbythispractice.1.2Testspecimensareexposedtofilteredxenonarclightundercontrolledenvironmentalconditions.Differenttypesofxenonarclightsourcesanddifferentfiltercombinationsaredescribed.1.3SpecimenpreparationandevaluationoftheresultsarecoveredinASTMmethodsorspecificationsforspecificmaterials.GeneralguidanceisgiveninPracticeG151andISO4892-1.MorespecificinformationaboutmethodsfordeterminingthechangeinpropertiesafterexposureandreportingtheseresultsisdescribedinISO4582.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.5.1Shouldanyozonebegeneratedfromtheoperationofthelamp(s),itshallbecarriedawayfromthetestspecimensandoperatingpersonnelbyanexhaustsystem.1.6ThispracticeistechnicallysimilartothefollowingISOdocuments:ISO4892-2,ISO11341,ISO105B02,ISO105B04,ISO105B05,andISO105B06.
【中国标准分类号】:A21
【国际标准分类号】:19_040
【页数】:11P.;A4
【正文语种】:


Product Code:SAE AS4660
Title:Nut, Short Flareless
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:No scope available.