Recent research on enhancement of damping in polymer composites.pdf

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1、COMPOSITESTRUCTURESELSEVIERCompositeStructures44(1999)89-98RecentresearchonenhancementofdampinginpolymercompositesIoanaC.Finegana3*,RonaldF.GibsonbdGeneralMotorsRandDCenter,PhysicsandPhysicalChemistryDepartment,Warren.MI48090,USAbDepartmentofMechanicalEngineering,AdvancedComposite

2、sResearchLaboratory,WayneStateUniversity,Detroit,MI48202,USAAbstractVibrationdampingisbecomingincreasinglyimportantforimprovedvibrationandnoisecontrol,dynamicstability,andfatigueandimpactresistanceinadvancedengineeringsystems.Thereisaparticularlystrongneedforinformationonmethodsfo

3、rim-provementofdampinginlightweightstructuralcompositematerialssothattheymaybemoreeffectivelyusedinthedesignofhighperformancestructuresandmachines.Thispapersummarizessomerecentanalyticalandexperimentalresultsregardingtheim-provementandoptimizationofdampinginpolymercompositemateria

4、lsatboththemacromechanicalandmicromechanicallevels.Alsoincludedisarelevantreviewoftherecentdevelopmentsinexperimentaltechniquesformeasuringdampingincompositematerials.Thebasicobjectiveofthispaperistoreviewsomeofthemostrecentresultsandsolutionsfordampingimprovementandoptimizationin

5、composites,andtoofferrecommendationsregardingfutureresearch.01999ElsevierScienceLtd.Allrightsreserved.1.Introductionorfluidmaterialsandthermalcontrol.Materialdam-pingcancontributetothepassivecontrolsystembyDampingofvibrationshasbecomeanimportantre-usingtheinherentcapacityofthemate

6、rialtodissipatequirementinthedesignofautomotiveandaerospacevibrationalenergy.Becauseofreducedsystemcom-structures.Designconsiderationsinvolveminimizationplexity,passivedampinggenerallycontributesmoreef-ofresonanceamplitudesandextendingthefatiguelifeoffectivelytotheimprovementofthe

7、reliabilityofstructuressubjectedtonear-resonantvibrationsundermachinesandstructuresthandoesactivedamping.Insuddenlyappliedforces.Inparticular,polymercom-addition,somepassivedampingmayberequiredinpositeshavegeneratedincreasedinterestinthedevel-ordertohaveastableactivecontrolsystem.

8、opmentofdampedstructuralmaterials