摘要
InordertoreconstructcomplicatedtemperaturefieldsmoreaccuratelybyacousticCT,areconstructionalgorithmbasedonMarkovradialbasisfunctionandTikhonovregularizationisproposedandnamedasMTRalgorithm.Withthealgorithm,theacousticvelocityfieldinamediumisapproximatedbyalinercombinationofMarkovradialbasisfunctions,theacoustictravel-timesovermulti-pathsandtheTikhonovregulationareusedtoreconstructtheacousticvelocitydistribution,andthenthetemperaturedistributioniscalculatedbyusingtherelationshipbetweenacousticvelocityandtemperature.Thetemperaturefieldmodelswithonehotspot,threehotspotsandfivehotspotsarereconstructedbyusingsimulationdata.ReconstructionresultsshowthattheMTRalgorithmcanreconstructthehottemperature,especiallythehotpositionaccurately.AnexperimentsystemfortemperaturedistributionmeasurementbyacousticCTisdeveloped.ThecapabilityofacousticCTtodetectahotspotcreatedbyelectricheatersinanexperimentalsilofilledwith1200kgsoybeansistestedbyusingtheMTRalgorithm.Inthereconstructiontemperaturefield,thehotpositioncanbedeterminedcorrectlyandthetemperatureerrorofthehotspotis1.3%.ItisthusclearthattheMTRalgorithmhasagoodcapacityofreconstructingcomplextemperaturefields,andcanbeexpectedtobeusedintemperaturemonitoringforactualstoredgains.
出版日期
2013年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
