搜索
MaterialsGenomeInitiativeLightWeightStructuralMaterialsSessionJohnAllisonTheUniversityofMichiganMay15,2012NIST/OSTPMGIWorkshop• OverviewofLightweightStructuralMaterialsArea• WhatcantheMGIApproachdototransformthisarea?ChargeFromTheWorkshopOrganizer(JimWarren)LightweightStructuralMaterials• Metals:Titanium,Aluminum,Magnesium• Polymers&PolymerMatrixComposites• Essentialforreducingweightofvehicles,powertrains,powerplants,etc.HowMuchDoWeKnow?*GoogleScholar-ArticlesandPatentsØ CarbonFiberComposites398,000Ø Mgalloys518,000Ø Tialloys935,000Ø Alalloys1,300,000Ø Steel3,350,000Ø Wehaveaccumulated≈10-20%oftheknowledgerequiredtouseC-FiberCompositesandMgalloysaseffectivelyassteel*UpdatedfromT.Pollock,UCSB,2010MaterialsGenomeInitiative...ThisinitiativeoffersauniqueopportunityfortheUnitedStatestodiscover,develop,manufacture,anddeployadvancedmaterialsatleasttwiceasfastaspossibletoday,atafractionofthecost.PresidentBarackObama,24June2011AnnouncingtheMaterialsGenomeInitiative“(Inthiscontext)genomeconnotesafundamentalbuildingblocktowardalargerpurpose”NSTCMGIWhitePaper,2011IntegratedComputationalMaterialsEngineering(ICME)istheintegrationofmaterialsinformation,capturedincomputationaltools,withengineeringproductperformanceanalysisandmanufacturing-processsimulation.**NAEICMEReport,2008ICMEisanEssentialIngredientofMGIQuantitativeStructure-PropertyRelationsQuantitativeProcessing-StructureRelationsChemistryThermodynamicsDiffusionManufacturingProcessSimulationEngineeringProductPerformanceAnalysisConstitutiveModels• Process&productoptimization• InnovationIntegratedComputationalMaterialsEngineering(ICME)istheintegrationofmaterialsinformation,capturedincomputationaltools,withengineeringproductperformanceanalysisandmanufacturing-processsimulation.**NAEICMEReport,2008AlAlloy-CastingSimulation• Process&productoptimization• InnovationPoreSizeDistributionHCFStrengthDistributionComponentDurability(FEA)ICMEisanEssentialIngredientofMGIMaterialsrepresentsadifferentclassofcomputationalproblem• Materialsresponseandbehaviorinvolveamultitudeofphysicalphenomenawithnosingleoverarchingmodelingapproach.• Capturingtheessenceofamaterialrequiresintegrationofawiderangeofmodelingapproachesdealingwithseparateandoftencompetingmechanismsandawiderrangeoflengthandtimescales.• Thereareover160,000engineeringmaterials!CastingPrecipitationMicroporosityEutecticPhasesChemistryThermodynamicsnSolutionTreatmentAgingHeatTreatmentProcessingMicrostructurePropertiesHighCycleFatigueLowCycleFatigueYieldStrengthThermalGrowthIntegrationofknowledgeisessentialtoMGIIncludeamanufacturingprocess(es),amaterialssystemandanapplicationorsetofapplicationsthatdefinethecriticalsetofmaterialspropertiesandgeometries!!!!!!!!!!!!!!• ExamplesofFEPsØ Lightweight,blastresistantforgedtitaniumstructuresØ RolledmagnesiumsheetforcrashresistantautomotivestructuresØ LowCostC-FiberCompositesforaerospace• Prioritizemodeling,experimental,dataissuestobetackled• Provideaframeworkforassemblyofmultidisciplinaryteams• Providenear-termpayoff(andthusincreasedbuy-in&investment)• ServeasthefoundationforthisemergingdisciplineICMEFoundationalEngineeringProblemsSlab/SheetCastingPrecipitationTexture/GrainStructureEutecticPhasesChemistryThermodynamicsnSoltnTrtAgingHeatTreatmentProcessingMicrostructurePropertiesDuctilityYieldStrength/StressStrainLowCycleFatigueCorrosionAluminumSheetFoundationalEngineeringProblem-Structure-PropertyLinkagesRollingForming??An Evolving MGI/ICME Framework* Founda9onal Engineering Problem 1 FEP 2 FEP 3 FEP 4 *withapologiestoChuckWard,PaulRetetal,USAirForceMaterialsLabIntegra9on PlaAorms An Evolving MGI/ICME Framework Aluminum Sheet for Auto & Aerospace Polymer Composites for Power & Transp Ti Forgings for Defense & Transp Mg Die Cas9ngs for Transp & Defense Educa&on Pervasive Tools for Characteriza&on & Modeling Valida&on & Uncertainty Informa&on Infrastructure (Data Standards & Structures) Model “Industrializa&on” 13TheVisionComputationally-drivenmaterialsdevelopmentisacoreactivityofmaterialsprofessionalsintheupcomingdecades,unitingmaterialssciencewithmaterialsengineeringandintegratingmaterialsmoreholisticallyandcomputationallywithproductdevelopment.14 WhenMGIissuccessful:• Wewillhavereducedthematerialsdevelopmentcyclefromtoday’s10-to20-yeartimeframebyatleast50%.!• Abroadspectrumofscientists,engineers,andmanufacturers—willhaveopenaccesstoacuratedMaterialsInformationInfrastructureincludinglibrariesofdatabases,tools,andmodels,!• Discoverieswillbeeasierandfaster–andoursciencemorecomprehensiveandrapidlyinsertedintotheengineeringprocess.!• GraduatingMSEstudents(andMechanical/AeronauticalEng)studentswillbeemployedandoperateinamultidisciplinaryandcomputationallyrichengineeringenvironment.!LightweightStructuralMaterials• Continuetobroadentheinvolvementofthematerialscommunity–lookforopportunitiestocollaborateandcontribute.• It’stheinformationinfrastructure,dummy• No,it’stheFEP,dummy• No,it’stheintegration• ForD