智能材料結(jié)構(gòu)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(jié)構(gòu)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(shù)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