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文件名称:碳纤维增强聚合物隐藏纤维断裂缺陷检测的涡流探头仿真设计.pdf
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第38卷第7期传感技术学报Vol38No7

2025年7月CHINESEJOURNALOFSENSORSANDACTUATORSJuly2025

SimulationDesignofEddyCurrentProbeforDetectingHiddenFiber

FractureDefectinCarbonFiberReinforcedPolymer?

1?32?3?1?3

YANChangli?BAOJun?XIONGXin

(1.FacultyofInformationEngineeringandAutomation?KunmingUniversityofScienceandTechnology?KunmingYunnan650500?China?

2.FacultyofCivilAviationandAeronautics?KunmingUniversityofScienceandTechnology?KunmingYunnan650500?China?

3.YunnanKeyLaboratoryofArtificialIntelligence?KunmingUniversityofScienceandTechnology?KunmingYunnan650500?China)

Abstract:Targetingattheproblemthatthetraditionaleddycurrenttestingmethodsaredifficulttodetectthehiddenfiberfracturede ̄

fectsincarbonfiberreinforcedpolymer(CFRP)materials?aneweddycurrentprobeisdesigned.Theprobeconsistsoftwohorizontally

placedrectangulardrivingcoilsandacircularpickupcoil.Thedifferentialdrivecanpre ̄filteroutpartofthenoise.Inaddition?thehor ̄

izontallyplacedrectangularcoilproducesamoreuniformeddycurrentwithbetterpenetrationintheverticaldirection?whichismorefa ̄

vorableforthedetectionofCFRPmaterialswithlaminatedstructures.Basedontheconstructionofathree ̄dimensionalfiniteelement

model?thechangesofeddycurrentpathsinCFRPmaterialswithdifferentlayupdirectionsareanalyzed?thesensitivityofdifferent

probesiscompared?andthechangesoftheinducedvoltageoftheprobesareanalyzedwhenthefiberbreaksarelocatedindifferentlay ̄

ers.Theresultsshowthatthedesignedprobecaneffectivelysuppresstheliftoffeffect?whichhashighersensitivityforthedetectionof

fiberfractureinCFRPmaterials?andthedirectionandlocationoffiber