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1、JournalofPhysics:ConferenceSeriesPAPER•OPENACCESSRelatedcontent-DamageDetectionbasedontheNaturalDamagedetectioninstructuresusingfrequencyFrequencyshiftingofaclampedrectangularplatemodelresponsefunctionsensemblewithextendedIrfanHilmy,MMAbdelWahab,ErryYullianTAdestaetal.cosinebasedindicator-ARobustPoi
2、ncareMapsMethodforDamageDetectionbasedonSingleTypeofMeasurementTocitethisarticle:Yun-LaiZhouetal2017J.Phys.:Conf.Ser.843012021Zhi-BoYang,Ya-NanWang,HaoZuoetal.-AssessmentofDamageDetectioninCompositeStructuresUsing3DVibrometryViewthearticleonlineforupdatesandenhancements.SGrigg,MPearson,RMarksetal.Th
3、iscontentwasdownloadedfromIPaddress117.165.40.107on26/05/2018at07:266thInternationalConferenceonFractureFatigueandWearIOPPublishingIOPConf.Series:JournalofPhysics:Conf.Series1234567890843(2017)012021doi:10.1088/1742-6596/843/1/012021Damagedetectioninstructuresusingfrequencyresponsefunctionsensemblew
4、ithextendedcosinebasedindicatorYun-LaiZhou1,XudongQian1,HongyouCao1,MagdAbdelWahab21DepartmentofCivilandEnvironmentalEngineering,NationalUniversityofSingapore,2EngineeringDrive2,Singapore1175762SoeteLaboratory,FacultyofEngineeringandArchitecture,GhentUniversity,TechnologieparkZwijnaarde903,B-9052Zwi
5、jnaarde,BelgiumE-mail:Magd.AbdelWahab@UGent.beAbstract.Althoughextensiveinvestigationsexistforstructuraldamagedetection,whichoftensolelyconsidersthestiffnessreduction,orspecificdamagetypelikeconcretespalling,thisstudyaimstoaddressageneralnoveltydetectionprocedurefordetectingthenovelty,orso-calledout
6、lierfromstructuraldynamicanalysiswithapplyingcosinebasedindicatorinfrequencyresponsefunctions.Thisstudyalsoaddressesashortreviewforthecosineindicatorandmodalassurancecriterion,andtheirinterrelationaswell.Theeightdegree-of-freedomsystemisconsideredfortheverification,andproveswellperformanceinnoveltyd
7、etection.1.IntroductionIn-servicestructuresundergovariousformsofoccasionsthatcanaffecttheirdynamicresponses,suchastemperature,boltloosening,concretespallingandsoon.Thesechangesincomparisonwiththeiniti
