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1、WORLDWIDETestProcedureENGINEERINGGMW14872MaterialsSTANDARDSCyclicCorrosionLaboratoryTestdurability),developmenttesting,andqualitycontrol1Scopetesting,forallglobalenvironmentalregions(refertoGMW8738forspecificMethodandapplicableNote:Nothinginthestandardsupersedesregion)
2、.applicablelawsandregulationsunlessspecificexemptionhasbeenobtained.ThebasicexposuresforcosmeticcorrosionarefoundbelowinexposuresAthroughC.ExposureNote:IntheeventofconflictbetweentheEnglishDisusedforfunctionalassessment(refertoanddomesticlanguage,theEnglishlanguageshal
3、lAppendixA,TableA1).Allcorrosionmechanismstakeprecedence.areacceleratedatdifferentratesontest.1.1Purpose.ThisproceduredescribesanCompletingthetestmaynotensurethataacceleratedlaboratorycorrosiontestmethodtocomponentpassesthefunctionalrequirement.Aevaluateassembliesandco
4、mponents.Thetestcomprehensivefailuremodeanalysismustbeprocedureprovidesacombinationofcyclicconductedtoensureallfailuremodesareconditions(saltsolution,varioustemperatures,consideredandlifeexpectancyismet.humidity,andambientenvironment)toaccelerateExposureA:UnderbodyComp
5、onentsmetalliccorrosion.Theprocedureiseffectiveforevaluatingavarietyofcorrosionmechanisms,suchExposureB:UnderhoodComponentsasgeneral,galvanic,crevice,etc.ThetestExposureC:ExteriorComponents/Panels,exposure/conditionscanbeindividuallytailoredtoSecondarySurfaces,andInter
6、iorComponentsachieveanydesiredlevelofcorrosionexposure.ExposureD:AllComponents(Functional)Also,synergisticeffectsduetotemperature,Note:ReferencetheDeviationssectionofthismechanicalandelectricalcyclingalongwithotherdocumentforoptionalmodifications.stressescanbecomprehen
7、dedbythistest.SeeDeviationsSection,whichaftertheAppendices,for2Referencestypicalmodifications.Note:Onlythelatestapprovedstandardsare1.2Foreword.Thetestmethodiscomprisedofapplicableunlessotherwisespecified.1%(approximate)complexsaltmistapplicationscoupledwithhightempera
8、tureandhighhumidity2.1ExternalStandards/Specifications.andhightemperaturedryoff.One(1)testcycleisASTMD610ISO8407equal
