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1、ENGINEERINGTestMethodGM9505PSTANDARDSMaterialsAutomotiveEnvironmentalCyclesNote2:ValidationTest-Fieldrelevanttest,cyclicenvironmentsrepresentseverefieldexposure.1Scope1.1SomeofthetestcyclesinthisspecificationNote:Nothinginthespecificationsupersedesarebestuseda
2、saqualitycontroltestandareapplicablelawsandregulationsunlessspecificnotmeanttovalidatepotentialfieldexemptionhasbeenobtained.performance.SeetheplatformmaterialsNote:Intheeventofconflictbetweentheengineerforadditionaldetails.Englishanddomesticlanguage,theEnglis
3、hlanguageshalltakeprecedence.2ReferencesEngineeringqualificationsofanapprovedNote:Onlythelatestapprovedstandardsaresourceisrequiredforthisspecification.Onlyapplicableunlessotherwisespecified.sourceslistedintheGMMaterialsFile(i.e.,--``,,`,,,,``,`,,,,,````,,,``,
4、,-`-`,,`,,`,`,,`---2.1ExternalStandards/Specifications.MATSPC)underthisspecificationnumberorGMW3044(trivalentchromateonzincplating)ASTMB117havebeenqualifiedbyengineeringasmeeting2.2GMStandards/Specifications.therequirementsofthisspecification.GM4298PGMW3001Tes
5、tCycleUsesGM4465PGMW3059TestQCValidationUseCycleTestTestGM9511PAXXCoatingevaluation-stressbeforeadhesion3TestEquipmenttestCXXExteriorabovebeltline3.1Humidityandtemperaturecabinetrequiredhumidity/temperaturetestofsuchdesignandconstructionastomaintainDXInteriora
6、bovebeltlinetherequiredrelativehumidity(RH)andhumidity/temperaturetestEXInteriorbelowbeltlinecondensation.Asuitableapparatusthatmaybehumidity/temperaturetestusedtosatisfytheconditionofthistestisFXXExteriorbelowbeltlinedescribedinGM4465P.Humiditytestusedforhumi
7、dity/temperaturetesttheInteriorTrimDimensionalStabilityCycleGXCorrosionResistance(CycleMandN)shallbeofnoncondensingtype,HXDimensionalstabilityofheadlinersandinteriormaintaining35±2°Ctemperatureat95±3%componentsRH.IXXGlassbonding/paintmaterialtest3.2Saltsprayca
8、binettestconsistingofafogJXCorrosionResistancechamber,saltsolutionreservoir,asupplyofKXExteriorsealant,suitablyconditionedcompressedair,oneorsubstrateand/orcoatingmoreatomizingnozz