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板内缺陷超声导波阵列检测技术.docx

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板内缺陷超声导波阵列检测技术 Title:UltrasonicGuidedWaveArrayInspectionforIn-PlateDefects Abstract: Innon-destructivetesting,thedetectionofinternaldefectsinplatesorstructuresisanessentialtask.Theultrasonicguidedwavearrayinspectiontechniquehasgainedsignificantattentionduetoitsabilitytodetectdefectsoveralargearea.Thispaperdiscussestheprinciples,techniques,advantages,andlimitationsoftheultrasonicguidedwavearrayinspectionforin-platedefectdetection. 1.Introduction Platestructuresarewidelyusedinvariousindustries,includingaerospace,automotive,maritime,andcivilengineering.Thepresenceofinternaldefectssuchascracks,voids,corrosion,ordelaminationcancompromisethestructuralintegrityandsafetyoftheseplates.Traditionalinspectionmethodsinvolvemanualscanningandvisualinspection,whicharetime-consumingandmayoverlookhiddendefects.Ultrasonicguidedwavearrayinspectionoffersamoreefficientandaccuratesolutionfordetectingthesedefectsinplates. 2.PrinciplesofUltrasonicGuidedWaves Ultrasonicguidedwavesarewavesthatpropagatealongthesurfaceorwithinthethicknessofaplatestructure.Thesewavescanbeexcitedbyanarrayoftransducersandreceivedbysensorsdistributedacrossthesurfaceoftheplate.Thebehaviorofguidedwavesisinfluencedbytheplate'smaterialproperties,geometry,andthepresenceofdefects.Byanalyzingthereflectedandtransmittedwaves,itispossibletodetectandcharacterizedefectsintheplate. 3.UltrasonicGuidedWaveArrayInspectionTechnique Theultrasonicguidedwavearrayinspectionisbasedonthedeploymentofmultipletransducersorsensorsinanarrayconfiguration.Thesetransducersaresequentiallyexcitedtogenerateguidedwavesthatpropagatethroughtheplate.Thereceivedsignalsareprocessedtoconstructimagesormapsoftheinternaldefects.Variousinspectiontechniques,suchaspitch-catch,pulse-echo,andphasedarray,areusedtoenhancedefectdetectionandlocalization. 4.AdvantagesofUltrasonicGuidedWaveArrayInspection -Highinspectionspeed:Thearrayconfigurationallowsforrapidinspectionoflargeareas,reducinginspectiontime. -Largecoveragearea:Withmultipletransducers,alargerareacanbeinsp