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