【英文标准名称】:Aerospaceseries-Fibresandcables,optical,aircraftuse-Testmethods-Part412:Humidityresistance;GermanandEnglishversionEN3745-412:2005
【原文标准名称】:航空航天系列.航空用光纤光缆.测试方法.第412部分:防潮性能;德文及英文版本EN3745-412:2005
【标准号】:EN3745-412-2005
【标准状态】:现行
【国别】:
【发布日期】:2006-12
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Aerospacetransport;Airtransport;Aircraft;Cables;Conduits;Degreeofmoisture;Electriccables;Electricalcords;Fibreoptics;Humidityaffects;Moisture;Moistureresistance;Multilingual;Opticalwaveguides;Spacetransport;Testing
【摘要】:
【中国标准分类号】:M33
【国际标准分类号】:49_060
【页数】:14P.;A4
【正文语种】:英语


【英文标准名称】:StandardReferenceRadiographsforSteelCastingsUpto2in.(50.8mm)inThickness
【原文标准名称】:厚度不超过2英寸(50.8毫米)的钢铸件的标准参考射线照片
【标准号】:ASTME446-2010
【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】:E07.02
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:discontinuityclassificationcriterion;gammaray;referenceradiographs;steelcastings;x-ray;Referenceradiographs--steelcastings;Steelcastings(referenceradiographs)
【摘要】:Gradedreferenceradiographsareintendedtoprovideaguideenablingrecognitionofspecificcastingdiscontinuitytypesandrelativeseveritylevelsthatmaybeencounteredduringtypicalfabricationprocesses.Referenceradiographscontainingungradeddiscontinuitiesareprovidedasaguideforrecognitionofaspecificcastingdiscontinuitytypewhereseveritylevelsarenotneeded.Thesereferenceradiographsareintendedasabasisfromwhichmanufacturersandpurchasersmay,bymutualagreement,selectparticulardiscontinuityclassestoserveasstandardsrepresentingminimumlevelsofacceptability(seeSections6and7).Referenceradiographsrepresentedbythisstandardmaybeused,asagreeduponinapurchasersupplieragreement,forenergylevels,thicknessesorbothoutsidetherangeofthisstandardwhendeterminedapplicableforthecastingserviceapplication.SeveritylevelsofsimilardiscontinuitycategoriesandenergylevelrangeofE186referenceradiographsmayalternativelybeused,asdeterminedappropriateforthecastingserviceapplication,ifsoagreeduponinthepurchasersupplieragreement(seeNote2and5.1).ProceduresforevaluationofproductionradiographsusingapplicablereferenceradiographsofthisstandardareprescribedinSection8;however,theremaybemanufacturing-purchaserissuesinvolvingspecificcastingserviceapplicationswhereitmaybeappropriatetomodifyoraltersuchrequirements.Wheresuchmodificationsmaybeappropriateforthecastingapplication,allsuchchangesshallbespecificallycalled-outinthepurchasersupplieragreementorcontractualdocument.Section9addressespurchasersupplierrequisitesforwhereweldrepairsmayberequired.1.1Thesereferenceradiographsillustratevariouscategories,types,andseveritylevelsofdiscontinuitiesoccurringinsteelcastingsthathavesectionthicknessesupto2in.(50.8mm)(seeNote2).ThereferenceradiographfilmsareanadjuncttothisstandardandmustbepurchasedseparatelyfromASTMInternational,ifneeded(see2.2).Categoriesandseveritylevelsforeachdiscontinuitytyperepresentedbythesereferenceradiographsaredescribedin1.2.Note18212;ThebasisofapplicationforthesereferenceradiographsrequiresapriorpurchasersupplieragreementofradiographicexaminationattributesandclassificationcriterionasdescribedinSections4,6,and7ofthisstandard.Note28212;ReferenceradiographspreviouslyusedforthisthicknessrangecarriedthedesignationE71,butincludedanowrarelyusedgammasource,thatis,radium.ThecurrentdocumentisalsoupdatedbyinclusionofseveralrecognizedshrinkageorCcategoriesandbyeliminationofthecrackandhottearcategoriesexceptforoneexampleofeachofthesediscontinuitytypes.ReferenceradiographsforthickersectionsmaybefoundinReferenceRadiographstandardsE186andE280.ReferenceRadiographstandardsE446andE186providesomeoverlapofseveritylevelsforsimilardiscontinuitycategorieswithinthesameenergylevelrange(see4.2,5.1,and6.3).1.2Thesereferenceradiographsconsistofthreeseparatevolumes(seeNote3)asfollows:(I)mediumvoltage(nominal250-kV)Xrays.(II)1-MVXraysandIridium-192radiation,and(III)2-MVto4-MV......
【中国标准分类号】:J31
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】:英语