【英文标准名称】:StandardPracticeforRadiologicExaminationofFlatPanelCompositesandSandwichCoreMaterialsUsedinAerospaceApplications
【原文标准名称】:用于航空航天器的平板复合材料和夹层芯材X线检查的标准实施规程
【标准号】:ASTME2662-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E07.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:aerospacecomposites,ComputedRadiology(CR);digitaldetectorarray(DDA);digitalradiology(DR);fiber-reinforcedpolymermatrixcomposites;flatpanels;highmodulusfibers;highperformancecomposites;honeycombcore;laminates;nondestructiveevalu
【摘要】:Radiologicexaminationmaybeusedduringproductandprocessdesignoptimization,onlineprocesscontrol,aftermanufactureinspection,andinserviceinspection.Inadditiontoverifyingstructuralplacement,radiologicexaminationcanbeusedinthecaseofhoneycombcorematerialstodetectnodebonds,core-to-coresplices,andcore-to-structuresplices.Radiologicexaminationisespeciallywellsuitedfordetectingsub-surfaceflaws.Thegeneraltypesofdefectsdetectedbyradiologicexaminationincludeblowncore,corecorrosion,damagedfilaments,densityvariation,entrappedfluid,fiberdebonding,fibermisalignment,foreignmaterial,fractures,inclusions,microcracks,nodebondfailure,porosity/voids,andthicknessvariation.FactorsthatinfluenceimageformationandX-rayattenuationinradiologicexamination,andwhicharerelevanttointerpretingtheimagesfortheconditionsofinterest,shouldbeincludedintheexaminationrequest.Examplesare,butnotlimitedto,thefollowing:laminate(matrixandfiber)material,lay-upgeometry,fibervolumefraction(flatpanels);facingmaterial,corematerial,facingstacksequence,coregeometry(cellsize);coredensity,facingvoidcontent,adhesivevoidcontent,andfacingvolumepercentreinforcement(sandwichcorematerials);overallthickness,specimenalignment,specimengeometryrelativetothebeam(flatpanelsandsandwichcorematerials).1.1ThispracticeisintendedtobeusedasasupplementtoPracticesE1742,E1255,andE2033.1.2Thispracticedescribesproceduresforradiologicexaminationofflatpanelcompositesandsandwichcorematerialsmadeentirelyorinpartfromfiber-reinforcedpolymermatrixcomposites.Radiologicexaminationis:a)radiographic(RT)withfilm,b)ComputedRadiography(CR)withImagingPlate,c)DigitalRadiology(DR)withDigitalDetectorArrayx2019;s(DDA),andd)Radioscopic(RTR)RealTimeRadiologywithadetectionsystemsuchasanImageIntensifier.Thecompositematerialsunderconsiderationtypicallycontaincontinuoushighmodulusfibers(>20GPa),suchasthoselistedin1.4.1.3Thispracticedescribesestablishedradiologicalexaminationmethodsthatarecurrentlyusedbyindustrythathavedemonstratedutilityinqualityassuranceofflatpanelcompositesandsandwichcorematerialsduringproductprocessdesignandoptimization,processcontrol,aftermanufactureinspection,inserviceexamination,andhealthmonitoring.1.4Thispracticehasutilityforexaminationofflatpanelcompositesandsandwichconstructionscontainingbutnotlimitedtobismaleimide,epoxy,phenolic,poly(amideimide),polybenzimidazole,polyester(thermosettingandthermoplastic),poly(etheretherketone),poly(etherimide),polyimide(thermosettingandthermoplastic),poly(phenylenesulfide),orpolysulfonematrices;andalumina,aramid,boron,carbon,glass,quartz,orsiliconcarbidefibers.Typicalas-fabricatedgeometriesincludeuniaxial,crossplyandangleplylaminates;aswellashoneycombcoresandwichconstructions.1.5Thispracticedoesnotspecifyaccept-rejectcriteriaandisnotintendedtobeusedasameansforapprovingflatpanelcompositesorsandwichcorematerialsforservice.1.6Toensureproperuseofthereferencedstandards,therearerecognizednondestructivetesting(NDT)specialiststhatarecertifiedaccordingtoindustryandcompanyNDTspecifications.ItisrecommendedthataNDTspecialistbeapartofanycompositecomponentdesign,qualityassurance,inservicemaintenanceordamageexamination.1.7Thi......
【中国标准分类号】:V13
【国际标准分类号】:49_035
【页数】:5P.;A4
【正文语种】:英语


【英文标准名称】:NOTGOrodgaugesover40mmupto500mmnominaldiameter
【原文标准名称】:标称直径40至500mm的不过端棒规
【标准号】:DIN2247-2-1989
【标准状态】:现行
【国别】:德国
【发布日期】:1989-11
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:尺寸;塞规;作标记;设计;井;规范(审批);不过瑞塞规
【英文主题词】:Design;Dimensions;Marking;Notgopluggauges;Pluggauges;Specification(approval);Wells
【摘要】:Thisstandardspecifiessizesforgaugingindimensionalmetrology.
【中国标准分类号】:J42
【国际标准分类号】:25_060_01
【页数】:2P.;A4
【正文语种】:德语