【英文标准名称】:Metallicmaterials-Fatiguetesting-Statisticalplanningandanalysisofdata
【原文标准名称】:金属材料.疲劳试验.数据的统计规划和分析
【标准号】:BSISO12107-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-11-21
【实施或试行日期】:2003-11-21
【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】:金属疲劳;持续的振动状态;试验;定义;材料;核技术;电压测量;轴向;机械工程;航空航天运输;统计学;金属;数据分析;疲劳极限;金属材料;疲劳试验;统计数据
【英文主题词】:
【摘要】:ObjectivesThisInternationalStandardpresentsmethodsfortheexperimentalplanningoffatiguetestingandthestatisticalanalysisoftheresultingdata.Thepurposeistodeterminethefatiguepropertiesofmetallicmaterialswithbothahighdegreeofconfidenceandapracticalnumberofspecimens.FatiguepropertiestobeanalysedThisInternationalStandardprovidesamethodfortheanalysisoffatiguelifepropertiesatavarietyofstresslevelsusingarelationshipthatcanlinearlyapproximatethematerial'sresponseinappropriatecoordinates.Specifically,itaddresses:a)thefatiguelifeforagivenstress,andb)thefatiguestrengthforagivenfatiguelife.Theterm"stress"inthisInternationalStandardcanbereplacedby"strain",asthemethodsdescribedarealsovalidfortheanalysisoflifepropertiesasafunctionofstrain.Fatiguestrengthinthecaseofstrain-controlledtestsisconsideredintermsofstrain,asitisordinarilyunderstoodintermsofstressinstress-controlledtests.LimitofapplicationThisInternationalStandardislimitedtotheanalysisoffatiguedataformaterialsexhibitinghomogeneousbehaviourduetoasinglemechanismoffatiguefailure.Thisreferstothestatisticalpropertiesoftestresultsthatarecloselyrelatedtomaterialbehaviourunderthetestconditions.Infact,specimensofagivenmaterialtestedunderdifferentconditionsmayrevealvariationsinfailuremechanisms.Forordinarycases,thestatisticalpropertyofresultingdatarepresentsonefailuremechanismandmaypermitdirectanalysis.Conversely,situationsareencounteredwherethestatisticalbehaviourisnothomogeneous.Itisnecessaryforallsuchcasestobemodelledbytwoormoreindividualdistributions.Anexampleofsuchbehaviourisoftenobservedwhenfailurecaninitiatefromeitherasurfaceorinternalsiteatthesamelevelofstress.Undertheseconditions,thedatawillhavemixedstatisticalcharacteristicscorrespondingtothedifferentmechanismsoffailure.ThesetypesofresultsarenotconsideredinthisInternationalStandardbecauseamuchhighercomplexityofanalysisisrequired.
【中国标准分类号】:H23
【国际标准分类号】:77_040_10
【页数】:36P;A4
【正文语种】:英语