Structuraldamagedetectionbasedonthereconstructedphasespace for reinforcedconcreteslab:Experimentalstudy
In thispaper,aparameterbasedongeometrychangesofthereconstructedmulti-dimensionalphasespaceofthemeasuredvibrationsignalsforstructuraldamageidentificationisproposed.Thechoiceoftheproperdelaytimestepsandembeddingdimensionsforphasespacereconstructionoflinearsystemsisdiscussed.Usingthedetermineddelaytimeandembeddingdimensions,anindexChangesofPhaseSpaceTopology(CPST)withmultipleembeddingdimensionsiscalculatedandthenusedtoidentifythestructuraldamage.Todemonstratethereliabilityoftheproposedmethod,vibrationtestdatacorrespondingtodifferentdamagestatesofacontinuousreinforcedconcreteslabisusedtocalculatetheCPSTvaluefordamageidentification.Theresultsindicatethatexceptthemeasurementpointsatstructuralsupports,theCPSTvaluesatall…