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NASA/CR-2001-210661AStudyofFailureCriteriaofFibrousCompositeMaterialsFedericoParísGeorgeWashingtonUniversityJointInstitutefortheAdvancementofFlightSciencesLangleyResearchCenterHampton,VirginiaMarch2001TheNASASTIProgramOffice...inProfileSinceitsfounding,NASAhasbeendedicatedtotheadvancementofaeronauticsandspacescience.TheNASAScientificandTechnicalInformation(STI)ProgramOfficeplaysakeypartinhelpingNASAmaintainthisimportantrole.TheNASASTIProgramOfficeisoperatedbyLangleyResearchCenter,theleadcenterforNASA’sscientificandtechnicalinformation.TheNASASTIProgramOfficeprovidesaccesstotheNASASTIDatabase,thelargestcollectionofaeronauticalandspacescienceSTIintheworld.TheProgramOfficeisalsoNASA’sinstitutionalmechanismfordisseminatingtheresultsofitsresearchanddevelopmentactivities.TheseresultsarepublishedbyNASAintheNASASTIReportSeries,whichincludesthefollowingreporttypes:•TECHNICALPUBLICATION.ReportsofcompletedresearchoramajorsignificantphaseofresearchthatpresenttheresultsofNASAprogramsandincludeextensivedataortheoreticalanalysis.Includescompilationsofsignificantscientificandtechnicaldataandinformationdeemedtobeofcontinuingreferencevalue.NASAcounterpartofpeer-reviewedformalprofessionalpapers,buthavinglessstringentlimitationsonmanuscriptlengthandextentofgraphicpresentations.•TECHNICALMEMORANDUM.Scientificandtechnicalfindingsthatarepreliminaryorofspecializedinterest,e.g.,quickreleasereports,workingpapers,andbibliographiesthatcontainminimalannotation.Doesnotcontainextensiveanalysis.•CONTRACTORREPORT.ScientificandtechnicalfindingsbyNASA-sponsoredcontractorsandgrantees.•CONFERENCEPUBLICATION.Collectedpapersfromscientificandtechnicalconferences,symposia,seminars,orothermeetingssponsoredorco-sponsoredbyNASA.•SPECIALPUBLICATION.Scientific,technical,orhistoricalinformationfromNASAprograms,projects,andmissions,oftenconcernedwithsubjectshavingsubstantialpublicinterest.•TECHNICALTRANSLATION.English-languagetranslationsofforeignscientificandtechnicalmaterialpertinenttoNASA’smission.SpecializedservicesthatcomplementtheSTIProgramOffice’sdiverseofferingsincludecreatingcustomthesauri,buildingcustomizeddatabases,organizingandpublishingresearchresults...evenprovidingvideos.FormoreinformationabouttheNASASTIProgramOffice,seethefollowing:•AccesstheNASASTIProgramHomePageat•[e-mail]•FaxyourquestiontotheNASASTIHelpDeskat(301)621-0134•TelephonetheNASASTIHelpDeskat(301)621-0390•Writeto:NASASTIHelpDeskNASACenterforAeroSpaceInformation7121StandardDriveHanover,MD21076-1320NationalAeronauticsandSpaceAdministrationLangleyResearchCenterHampton,Virginia23681-2199NASA/CR-2001-210661AStudyofFailureCriteriaofFibrousCompositeMaterialsFedericoParísGeorgeWashingtonUniversityJointInstitutefortheAdvancementofFlightSciencesLangleyResearchCenterHampton,VirginiaMarch2001PreparedforLangleyResearchCenterunderCooperativeAgreementNCC1-24Availablefrom:NASACenterforAeroSpaceInformation(CASI)NationalTechnicalInformationService(NTIS)7121StandardDrive5285PortRoyalRoadHanover,MD21076-1320Springfield,VA22161-2171(301)621-0390(703)605-6000AcknowledgmentsTheauthorofthisreportacknowledgestheeffortsofKarenJacksonandSotirisKellasformakinghisstayatNASALangleypossibleduringthesummerof1999andalsotoJohnWhitesidesandJessieCoatesofGeorgeWashingtonUniversity,throughwhichthestaywasorganized.TheauthorwouldliketothankallmembersoftheCrashDynamicsGroupoftheStructuralDynamicsBranchfortheirwelcomeandcollaborationduringthetimespentinHampton.Finally,thankstoallmembersoftheElasticityandStrengthofMaterialsGroupattheEngineeringSchooloftheUniversityofSevilleandtoCarlosDavilafromNASALangleyforcommentsonthefinalversionofthereport,inparticulartoJ.C.Marinforhishelpingeneratingthegraphsforthereport.FedericoParísProfessorUniversityofSevilleSchoolofIndustrialEngineersCno.delosDescubrimientos,s/n41092Seville,[e-mail]....................................................................12.0.ReviewofRecentWorks..........................................................12.1.PapersProposingFailureCriteria.................................................22.2.Papers/PublicationsRevisingExistingApproaches...................................132.3.PapersDealingWithOut-of-LaminaFailures.......................................182.4.PapersComparingDifferentApproachesorCarryingOutStudiesonParticularCases.......212.5.PapersFromIndustry..........................................................242.6.CompositeStructuresDesignPapers..............................................252.7.MiscellaneousPapers..........................................................273.0.FailureCriteriainMSC.Dytran....................................................303.1.HashinCriteria...............................................................303.2.ChangCriteria...............................................................343.3.EvaluationoftheImplicationsofTakingST=SintheHashinCriterion..................373.4.SensitivityStudyofHashinCriteriontoError