ASTM B548-2003(2009) 压力容器用铝合金板的超声波检验的标准试验方法

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【英文标准名称】:StandardTestMethodforUltrasonicInspectionofAluminum-AlloyPlateforPressureVessels
【原文标准名称】:压力容器用铝合金板的超声波检验的标准试验方法
【标准号】:ASTMB548-2003(2009)
【标准状态】:现行
【国别】:美国
【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】:B07.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Aluminumalloys--ultrasonicinspection;Aluminumalloys(plate/sheet)--specifications;Pressurevessels;Ultrasonictesting--metals/alloys
【摘要】:Anumberoffactorssuchastheconditionoftheentryandbacksurfacesoftheplate,theinclinationoftheultrasonicbeamwithrespecttotheentrysurface,andtheperformancecharacteristicsofthetestsystemmaycauseeitherareductionofisolatedindicationsorasubstantiallossofbackreflectionandtherebycouldseriouslyimpairthereliabilityofthetestprocedureoutlinedinthisstandard.Accurateevaluationsofdiscontinuitysizealsomaybelimitedsignificantlybyvariationsinbeamcharacteristicswhichexistinmostsearchunits.Forthisreason,discontinuitysizeasdeterminedbythetestprocedureoutlinedinthismethodisregardedasx201C;apparentx201D;orx201C;estimatedx201D;inrecognitionofthelimitedquantitativevalueofthemeasurement.Becausealargenumberofinteractingvariablesinatestsystemcanadverselyinfluencetheresultsofanultrasonictest,theactualquantitativeeffectsofdetecteddiscontinuitiesuponthemechanicalpropertiesoftheinspectedplatearedifficulttoestablish.Consequently,thisultrasonicinspectionmethodisnotapplicableasanexclusiveindicatoroftheultimatequalityandperformanceofpressurevesselsbutprovidesareliablecontrolofplatequalitytoavoidfailureduringtheformingprocessforfabricationofvessels.1.1Thistestmethodcoverspulse-echoultrasonicinspectionofaluminum-alloyplateofthicknessequaltoorgreaterthan0.500in.(12.7mm)foruseinthefabricationofpressurevessels.Theultrasonictestisemployedtodetectgrossinternaldiscontinuitiesorientedinadirectionparalleltotherolledsurfacesuchascracks,ruptures,andlaminations,andtoprovideassurancethatonlyplatethatisfreefromrejectablediscontinuitiesisacceptedfordelivery.1.2Theinspectionmethodandacceptancecriteriaincludedinthisstandardshallbelimitedtoplateofthefollowingaluminumalloys:1060,1100,3003,Alclad3003,3004,Alclad3004,5050,5052,5083,5086,5154,5254,5454,5456,5652,6061,andAlclad6061.1.3Thistestmethodappliesonlytoultrasonictestsusingpulsedlongitudinalwaveswhicharetransmittedandreceivedbyasearchunitcontainingeitherasinglecrystaloracombinationofelectricallyinterconnectedmultiplecrystals.Ultrasonictestsemployingeitherthethrough-transmissionortheangle-beamtechniquesarenotincluded.1.4Thistestmethodshallbeusedwhenultrasonicinspectionasprescribedhereinisrequiredbythecontract,purchaseorder,orreferencedplatespecification.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H26
【国际标准分类号】:77_150_10
【页数】:5P.;A4
【正文语种】:英语