Designation:E1169−18AnAmericanNationalStandardStandardPracticeforConductingRuggednessTests1ThisstandardisissuedunderthefixeddesignationE1169;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversconductingruggednesstests.Thepurposeofaruggednesstestistoidentifythosefactorsthatstronglyinfluencethemeasurementsprovidedbyaspecifictestmethodandtoestimatehowcloselythosefactorsneedtobecontrolled.1.2Thispracticerestrictsitselftodesignswithtwolevelsperfactor.Thedesignsrequirethesimultaneouschangeofthelevelsofallofthefactors,thuspermittingthedeterminationoftheeffectsofeachofthefactorsonthemeasuredresults.1.3Thesystemofunitsforthispracticeisnotspecified.Dimensionalquantitiesinthepracticearepresentedonlyasillustrationsofcalculationmethods.Theexamplesarenotbindingonproductsortestmethodstreated.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2E456TerminologyRelatingtoQualityandStatisticsE1325TerminologyRelatingtoDesignofExperimentsE1488GuideforStatisticalProcedurestoUseinDevelopingandApplyingTestMethodsE2282GuideforDefiningtheTestResultofaTestMethodF2082TestMethodforDeterminationofTransformationTemperatureofNickel-TitaniumShapeMemoryAlloysbyBendandFreeRecovery3.Terminology3.1Definitions—TheterminologydefinedinTerminologyE456app...
