A07-IntroductiontoCompositeMaterialsIntroductiontoCompositeMaterialsReferences•AERO304notesandIntroductiontoAerospaceStructuralAnalysis,AllenandHaisler•PrinciplesofCompositeMaterialMechanics,R.F.Gibson,McGraw-Hill,1994•MechanicsofCompositeMaterials,RobertM.Jones,McGraw-Hill,1975•IntroductiontoCompositeMaterials,S.W.TsaiandH.T.Hahn,TechnomicPublishingCo.,1980IntroductionandTerminologyStructuralmaterialscanbedividedinto4basiccategories:MetalsPolymersCeramicsCompositesA07-IntroductiontoCompositeMaterialsComposites,whichconsistoftwoormoreseparatematerialscombinedinamacroscopicstructuralunit,aremadefromvariouscombinationsoftheotherthreematerials.TherelativeimportanceofthefourbasicmaterialsinahistoricalcontexthasbeenpresentedbyAshby(Technologyofthe1990s:AdvancedMaterialsandPredictiveDesign,M.F.Ashby,PhilosophicalTransactionsoftheRoyalSociety,oAf32L2o,ndon393-407,1987)andisshownschematicallybelow(figuretakenfromGibson):KXXM)BX:5000B.C01()00150018001900194019601980199020002010202011iIJ1IkIllIMEmsjBronzeMETALSCastironSteekAlloyfiteehLightalloysSuperalloysAlloyscomposmeve^opmentslow:Mostlyquality^controlandprwcMingCOMPOSITESSirawBrtckRubberBakeIHeNylonRefractoriesPonlandcementConductingpclyTnersHigh-temperaturepolyighmoduluspolymersPo^esteEpoxiesPEPMMA人即>li碣CeramiccompositesMeUil-matrix10000B,C.5000B.C010001500180019001940196019的1990200020102020YearFIGURE1*1Therelativeimportanceofmetals,polymers,composites,andceramicsasafunctionoftime