BS EN 4003-2006 航空航天系列.AL-P2219-T87型铝合金.0.5mm≤a≤6mm的薄板材和带材
时间:2024-05-17 02:48:13 来源: 标准资料网 作者：标准资料网 阅读：8656
【英文标准名称】:Aerospaceseries-AluminiumalloyAL-P2219-T87-Sheetandstrip0,5mma6mm
【原文标准名称】:航空航天系列.AL-P2219-T87型铝合金.0.5mm≤a≤6mm的薄板材和带材
【标准号】:BSEN4003-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2007-03-30
【实施或试行日期】:2007-03-30
【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】:航空航天运输;航空运输;航空器;合金;铝;铝合金;铝薄板材;化学成分;尺寸;检验;材料;材料数据;金属材料;金属;多语种的;特性;质量保证;半成品;薄板材;航天运输;规范(验收);带材;测试
【英文主题词】:Aerospacetransport;Airtransport;Aircraft;Alloys;Aluminium;Aluminiumalloys;Aluminiumsheets;Chemicalcomposition;Dimensions;Inspection;Materials;Materialsdata;Metallicmaterials;Metals;Multilingual;Properties;Qualityassurance;Semi-finishedproducts;Sheetmaterials;Spacetransport;Specification(approval);Strips;Testing
【摘要】:Thisstandardspecifiestherequirementsrelatingto:AluminiumalloyAL-P2219-T87—Sheetandstrip0,5mm≤a≤6mmforaerospaceapplications.
【中国标准分类号】:V11
【国际标准分类号】:49_025_20
【页数】:10P.;A4
【正文语种】:英语
【英文标准名称】:Calculationofscuffingloadcapacityofcylindrical,bevelandhypoidgears-Flashtemperaturemethod
【原文标准名称】:圆柱形齿轮、伞齿轮和准双曲面齿轮磨损承载能力的计算.闪蒸温度法
【标准号】:BSISO/TR13989-1-2001
【标准状态】:现行
【国别】:英国
【发布日期】:2001-05-15
【实施或试行日期】:2001-05-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:热试验;温度冲击试验;材料热性质;正齿轮;负荷;齿轮传动;机械试验;高温试验;伞齿轮;准双曲面齿轮;荷载能力
【英文主题词】:
【摘要】:ThispartofISO/TR13989specifiesmethodsandformulaeforevaluatingtheriskofscuffing,basedonBlok'scontacttemperatureconcept.ThefundamentalconceptaccordingtoBlokisapplicabletoallmachineelementswithmovingcontactzones.Theflashtemperatureformulaearevalidforaband-shapedorapproximatelyband-shapedHertziancontactzoneandworkingconditionscharacterizedbysufficientlyhighPecletnumbers.
【中国标准分类号】:J17
【国际标准分类号】:21_200
【页数】:48P;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforExposingNonmetallicMaterialsinAcceleratedTestDevicesthatUseLaboratoryLightSources
【原文标准名称】:使非金属材料暴露于使用实验室光源的加速试验装置的标准实施规程
【标准号】:ASTMG151-2010
【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】:G03.03
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:accelerated;durability;exposure;light;temperature;weathering;ultraviolet;UV-radiation;Durability;Laboratoryaging/weathering;Lightexposure;Acceleratedweathering;Lightfastness;Nonmetallicmaterials;Weathering
【摘要】:Significance:Whenconductingexposuresindevicesthatuselaboratorylightsources,itisimportanttoconsiderhowwelltheacceleratedtestconditionswillreproducepropertychangesandfailuremodesassociatedwithend-useenvironmentsforthematerialsbeingtested.Inaddition,itisessentialtoconsidertheeffectsofvariabilityinboththeacceleratedtestandoutdoorexposureswhensettingupexposureexperimentsandwheninterpretingtheresultsfromacceleratedexposuretests.Nolaboratoryexposuretestcanbespecifiedasatotalsimulationofactualuseconditionsinoutdoorenvironments.Resultsobtainedfromtheselaboratoryacceleratedexposurescanbeconsideredasrepresentativeofactualuseexposuresonlywhenthedegreeofrankcorrelationhasbeenestablishedforthespecificmaterialsbeingtestedandwhenthetypeofdegradationisthesame.TherelativedurabilityofmaterialsinactualuseconditionscanbeverydifferentindifferentlocationsbecauseofdifferencesinUVradiation,timeofwetness,relativehumidity,temperature,pollutants,andotherfactors.Therefore,evenifresultsfromaspecificexposuretestconductedaccordingtothispracticearefoundtobeusefulforcomparingtherelativedurabilityofmaterialsexposedinaparticularexteriorenvironment,itcannotbeassumedthattheywillbeusefulfordeterminingrelativedurabilityofthesamematerialsforadifferentenvironment.Eventhoughitisverytempting,calculationofanaccelerationfactorrelatingxhormegajoulesofradiantexposureinalaboratoryacceleratedtesttoymonthsoryearsofexteriorexposureisnotrecommended.Theseaccelerationfactorsarenotvalidforseveralreasons.Accelerationfactorsarematerialdependentandcanbesignificantlydifferentforeachmaterialandfordifferentformulationsofthesamematerial.Variabilityintherateofdegradationinbothactualuseandlaboratoryacceleratedexposuretestcanhaveasignificanteffectonthecalculatedaccelerationfactor.Accelerationfactorscalculatedbasedontheratioofirradiancebetweenalaboratorylightsourceandsolarradiation,evenwhenidenticalbandpassesareused,donottakeintoconsiderationtheeffectsonamaterialofirradiance,temperature,moisture,anddifferencesinspectralpowerdistributionbetweenthelaboratorylightsourceandsolarradiation.Note48212;Ifuseofanaccelerationfactorisdesiredinspiteofthewarningsgiveninthispractice,suchaccelerationfactorsforaparticularmaterialareonlyvalidiftheyarebasedondatafromasufficientnumberofseparateexteriorandlaboratoryacceleratedexposuressothatresultsusedtorelatetimestofailureineachexposurecanbeanalyzedusingstatisticalmethods.AnexampleofastatisticalanalysisusingmultiplelaboratoryandexteriorexposurestocalculateanaccelerationfactorisdescribedbyJ.A.Simms(1).Thereareanumberoffactorsthatmaydecreasethedegreeofcorrelationbetweenacceleratedtestsusinglaboratorylightsourcesandexteriorexposures.MorespecificinformationonhoweachfactormayalterstabilityrankingofmaterialsisgiveninAppendixX1.Differencesinthespectraldistributionbetweenthelaboratorylightsourceandsolarradiation.Lightintensitieshigherthanthoseexperiencedinactualuseconditions.Testconditionswherespecimensareexposedcontinuouslytolightwhenactualuseconditionsprovidealternateperiodsoflightanddark.Specimentemperatureshigherthanthoseinactualconditions.Exposureconditionsthatproduceunrealistict.......
【中国标准分类号】:A21
【国际标准分类号】:19_040
【页数】:15P.;A4
【正文语种】:英语