基于磁致伸缩效应的超声导波水下结构检测

1CIPMM00013基于磁致伸缩效应的超声导波水下结构检测试验研究CIPMM00013基于磁致伸缩效应的超声导波水下结构检测试验研究陈德胜1,2杨勇21．中国石油大学（华东），山东青岛，2665802．胜利油田技术检测中心，山东东营，257000ExperimentalResearchonDetectionofUnderwaterStructuresUsingUltrasonicGuidedWavesBasedonMagnetostrictiveEffectChenDesheng1，2YangYong21.ChinaPetroleumUniversity(Huadong),ShandongQingdao，266500，China;2.TechnologyInspectionCenterofShengLiOilfield,ShandongDongying，257000,ChinaCopyright2013,ShaanxiPetroleumSocietyThispaperwaspreparedforpresentationatthe2013InternationalConference&ExhibitiononPipelineMonitoringandManagementheldinXi’an,China,16-18September2013.ThispaperwasselectedforpresentationbytheICPMMCommitteefollowingreviewofinformationcontainedinanabstractsubmittedbytheauthor(s).Contentsofthepaper,aspresented,havenotbeenreviewedbytheICPMMCommitteeandaresubjecttocorrectionbytheauthor(s).ThematerialdoesnotnecessarilyreflectanypositionoftheICPMMCommittee,itsmembers.PaperspresentedattheConferencearesubjecttopublicationreviewbyProfessionalCommitteeofPetroleumEngineeringofShaanxiPetroleumSociety.Electronicreproduction,distribution,orstorageofanypartofthispaperforcommercialpurposeswithoutthewrittenconsentofShaanxiPetroleumSocietyisprohibited.Permissiontoreproduceinprintisrestrictedtoanabstractofnotmorethan300words;illustrationsmaynotbecopied.TheabstractmustcontainconspicuousacknowledgmentofICPMM.Contactemail:info@icrsm.org.AbstractTheexperimentshavebeenappliedfordefectivesimulationdeviceonlandandinwaterrespectivelyusingthe128KHzultrasonicguidedwavesbasedonmagetostrictiveeffect.Accordingtotheresultsafternoisereductionusingwavelettransform,theprecastandexistingitselfcorrosiondefectsofsimulationstructurecanbedistinguishedclearlybyreflectionsignals.Theresultsoftime-frequencyanalysisshowthattheprefabricateddefectsandthewallthicknessthinningpartsofsimulationstructurecanbedetectedbyultrasonicguidedwavesontheland.However,thecorrosionpartsofsimulationdevicecouldnotbedetectedusingguidedwavesbecauseoftheattenuationseriouslywhileitentersthewater.Also,theprefabricate