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【英文标准名称】:StandardPracticeforShearographyofPolymerMatrixComposites,SandwichCoreMaterialsandFilament-WoundPressureVesselsinAerospaceApplications
【原文标准名称】:航空航天用聚合物基复合材料、夹层芯材和纤维缠绕压力容器的剪切测量技术的标准实施规程
【标准号】:ASTME2581-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:E07.10
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:航空航天运输;芯材;纤维缠绕;模型;高聚物;压力容器;增强塑料;夹层芯材;剪切测量技术;航天技术;航天运输
【英文主题词】:aerospacecomposites;composites;COPV;fiber-reinforcedpolymermatrixcomposites;filament-woundpressurevessels;highmodulusfibers;highperformancecomposites;honeycombcore;laminates;nondestructiveevaluation(NDE);nondestructiveins
【摘要】:Shearographyiscommonlyusedduringproductprocessdesignandoptimization,processcontrol,postmanufactureinspection,andinserviceinspection,andcanbeusedtomeasurestaticanddynamicaxial(tensileandcompressive)strain,aswellasshearing,Poisson,bending,andtorsionalstrains.Thegeneraltypesofdefectsdetectedbyshearographyincludedelamination,deformationunderload,disbond/unbond,microcracks,andthicknessvariation.Factorsthatinfluenceshearographyandthereforeshallbereportedincludebutarenotlimitedtothefollowing:laminate(matrixandfiber)material,lay-upgeometry,fibervolumefraction(flatpanels);facingmaterial,corematerial,facingstacksequence,coregeometry(cellsize);coredensity,facingvoidcontent,andfacingvolumepercentreinforcement(sandwichcorematerials);processingandfabricationmethods,overallthickness,specimenalignment,specimenconditioning,specimengeometry,andtestenvironment(flatpanelsandsandwichcorematerials).1.1Thispracticedescribesproceduresforshearographyofpolymermatrixcomposites,sandwichcorematerials,andfilament-woundpressurevesselsmadeentirelyorinpartfromfiber-reinforcedpolymermatrixcomposites.Thecompositematerialsunderconsiderationtypicallycontaincontinuoushighmodulus(greaterthan20GPa(3106psi))fibers,butmayalsocontaindiscontinuousfiber,fabric,orparticulatereinforcement.1.2Thispracticedescribesestablishedshearographyproceduresthatarecurrentlyusedbyindustryandfederalagenciesthathavedemonstratedutilityinqualityassuranceofpolymermatrixcomposites,sandwichcorematerials,andfilament-woundpressurevesselsduringproductprocessdesignandoptimization,manufacturingprocesscontrol,postmanufactureinspection,andinserviceinspection.1.3Thispracticehasutilityfortestingofpolymermatrixcomposites,sandwichcorematerials,andfilament-woundpressurevesselscontainingbutnotlimitedtobismaleimide,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;aswellashoneycombandfoamcoresandwichmaterialsandstructures.1.4Thispracticedoesnotspecifyaccept-rejectcriteriaandisnotintendedtobeusedasameansforapprovingpolymermatrixcomposites,sandwichcorematerials,orfilament-woundpressurevesselsforservice.(Pleasenotethataflawdoesnotbecomeadefectuntilrejectedbyacceptance/rejectioncriteria.)1.5Toensureproperuseofthereferencedstandards,therearerecognizednondestructivetesting(NDT)specialiststhatarecertifiedinaccordancewithindustryandcompanyNDTspecifications.ItisrecommendedthatanNDTspecialistbeapartofanycompositecomponentdesign,qualityassurance,inservicemaintenance,ordamageexaminationactivity.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:V13
【国际标准分类号】:49_140;83_120
【页数】:11P.;A4
【正文语种】: