预览加载中，请您耐心等待几秒...

基于曲率模态的复合材料层合板分层损伤检测方法研究.docx

预览
1/2
2/2

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

基于曲率模态的复合材料层合板分层损伤检测方法研究 Title:ResearchonLayeredDamageDetectionMethodforCompositeLaminatesBasedonCurvatureMode Abstract: Compositelaminatesarewidelyusedinvariousindustriesduetotheirexcellentmechanicalproperties.However,layereddamageincompositelaminatescansignificantlydegradetheirstructuralintegrityandperformance.Hence,developinganeffectivedamagedetectionmethodforcompositelaminatesiscrucial.Thispaperfocusesontheresearchofalayereddamagedetectionmethodforcompositelaminatesbasedoncurvaturemode. Introduction: Compositelaminatesconsistofmultiplelayersoffiber-reinforcedmaterials,suchascarbonfiberandglassfiber,bondedtogetherwithamatrixmaterial.Thearrangementandstackingsequenceoftheselayersgivethelaminatestheiruniquemechanicalproperties.However,variousfactors,suchasloadingconditions,aging,andmanufacturingdefects,cancausedamagetotheselaminates,includingdelamination,fiberbreakage,andmatrixcracking.Detectingandlocatingsuchdamageaccuratelyisessentialtoensurethesafetyandreliabilityofcompositestructures. LiteratureReview: Severalmethodshavebeenproposedfordamagedetectionincompositelaminates,includingacousticemission,fiberopticsensors,piezoelectricsensors,andultrasonictechniques.However,thesemethodsoftenrequirecomplexinstrumentationandexpensiveequipment,makingthemlesspracticalforroutineinspectionandmaintenance.Inrecentyears,non-contactandnon-destructiveevaluationapproacheshavegainedattention,amongwhichcurvaturemeasurementisapromisingtechnique. Methodology: Theproposedlayereddamagedetectionmethodutilizesthecurvaturemodeofcompositelaminatestoidentifyandlocalizethedamage.Curvatureisameasureofthebendingdeformationofastructureandcanbeobtainedbymeasuringstrainfields.Themethodinvolvesthefollowingsteps: 1.Experimentalpreparation:Prepareacompositelaminatespecimenandinstrumentitwithstraingaugesoropticalsensorstomeasurethestrain. 2.Curvaturecalculation:Usethemeasuredstraindatatocalculatethecurvaturedistributionofthecompositelaminate. 3.Damagedetectionalgorithm:Developanalgorithmbasedonthecurva