智能材料結構中壓電元件局部脫膠損傷特性研究.pdf

1、南京航空航天大學碩士學位論文智能材料結構中壓電元件局部脫膠損傷特性研究姓名：蔣雅娜申請學位級別：碩士專業(yè)：測試計量技術及儀器指導教師：王幫峰20040301。一童窒鏊塞整耋查蘭黧主簍壟鯊莖AbstractPartiallydebondingatthet豫nsduc轂：stfue搬瓣interfaceisamajorfactorsignificantlyalteringthedynamicresponseofsmartstrltcture

2、s。hencetheineffectivenes$ofthestructures。纛ispaperpresentsallexperimentalinvesfigafionconductedtoanalyzethiseffectofthetransducerdebongingThispaperstartswithabriefintroductionofthebirthanddevelopmentofSmartMaterialsandStr

3、ucturesandHealthMonitoring，whichservesasapreludetotheresearchsubjectpartiallydebondingatthetransducerstmctureinterfaceThen，itdealswiththetheoryof穗eFiniteElement，ExperimentalModalAnalysisandHilbertHuangTransform，whichform

4、sthetheoreticalgroundworkofthefoflowingexperimentalinvestigationaimingatanalyzingtheeffectofthetransducerdebongingonthedynamicresponseofcompositelaminatedcantileverbeam羽∽researchresultsshowthattransducerpartiallydebondin

5、gresultsinclearchangeofinstantaneousfrequenciesmodefrequenciesanddampingratioofthestructuresH酣ismoFeeffecfivethanexperimentalmodalanalysisandCall蓼veamoreclearphysicallymeaningfulinterpretation輪theStrUC澈reresponse瓤髓撼ly疊建e

6、xperimentalresearchforcompositelaminatedflatiscarriedouttoanalyzethesignalofpiezoelectricpiatwithparti搬ydebondingatthetransducerstrucmreinterfaceTheexperimenthasvalidatedthattransducerpartiallydebondingresaltsinclearchan

7、geoftheresponsesignals’amplitudes，mainfrequencypointsandamplitudesofthemainfrequencyp蕊nls。Keywords：Smartmaterialandstructure，Healthmonitoring，debondingdamage，Thefiniteelement，ExperimentalmodalanalyzeHilbertHuangTransform