Advances in Composites Technology

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1、TECHLIBRARYKAFB,NMIIMl111110150=141NASATechnicalMemorandum86353^11C•JaCliGj/2'414U75ADVANCESINCOMPOSITESTECHNOLOGYDarrelR,TenneyandH,BensonDexterJanuary1985REPRODUCEDBVNATIONALTECHNICALINFORMATIONSERVICEUSDEPARTMENTOFCOMMERCESPRINGFIELD.VA22161NASANationalAeronauticsandSpaceAdministr

2、ationLangleyResearchCenterHampton,Virginia23665tReportNo.2GovernmentAcceuionNo.3.jRecipient'sCatalogNoNASATM-863534TitleandSubtitle5.ReportDateJanuary1985ADVANCESINCOMPOSITESTECHNOLOGY6.PerformingOrganizationCode505-42-23-037Author(t)8.PerformingOrganizationReportNo.BarrelR.Tenneyand

3、H.BensonDexter10.WorkUnitNo9PerformingOrganizationNameandAddress11.ContractorGrantNo.NASALangleyResearchCenterHampton,Virginia2366513.TypeofReportandPeriodCovered12SponsoringAgencyNameandAddressTechnicalMemorandumNationalAeronauticsandSpaceAdministration14.SponsoringAgencyCodeWashing

4、ton,DC20546ISSupplementaryNotesUseoftradenamesormanufacturersdoesnotconstituteanofficialendorsement,eitherexpressedorimplied,bytheNationalAeronauticsandSpaceAdministration.16AbstractMajoradvancementshavebeenmadeinthedevelopmentofadvancedcompositemate-rialsduringthepastdecade.Composit

5、eshavemovedfromtheresearchlaboratorytotheproductionfloor,wheretheyarebaselineformanyaerospacehardwarecomponents.Designdatabasesandin-servicedurabilityhavebeenestablishedforavarietyofserviceenvironments.Manyoftheapplicationsofcompositeshavebeenforreplace-mentofmetalpartsonexistingdesi

6、gnswithanaverageweightsavingsofapproxi-mately20to25percent.However,thefullweightreductionpotentialofcompositescanonlyberealizedwhenthedamagetoleranceofcompositesisincreasedsuchthattheycanbeutilizedatstrainlevelssignificantlyhigherthanthe0.004limitcur-rentlyusedinmanyaerospaceapplicat

7、ions.Asignificantlevelofresearchiscurrentlyfocusedonthedevelopmentoftoughresinsandhighstrainfibersinanefforttogainimproveddamagetolerance.Moder-atesuccesshasbeenachievedwiththedevelopmentofnewresinssuchasPEEKandadditionalimprovementslookpromisingwithnewthermoplasticresins.Development

8、ofinnovative