201110-04-1涡流检测在航空中的应用

AerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide1EddyCurrentNDTinAerospaceAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide2Whatdowedo,andwhofor?uHistoryofECNDTinAerospaceuEddycurrenttestinghasbeenusedforover50yearsuOriginallyfocusedonmanufacturedpartsuTechniquedevelopmentisnowfocusedonaircraftmaintenanceactivitiesuNeedtoimproveinspectionsensitivityandefficiencyduetotheincreasingnumberof‘old‘aircraftretainedinserviceAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide3Whatdowedo,andwhofor?uApplicationsofeddycurrentNDTinAerospaceuSurfacebreakingflawdetectionuRotatingholeinspectionuSubsurfaceflawandcorrosiondetectionuDualfrequencyinspectiontechniquesuConductivitymeasurementuCoatingthicknessmeasurementAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide4ApplicationsofECNDTinAerospaceuMajoradvantagesofECNDTtoaerospaceuAbilitytoinspectforverysmallflawsuAbilitytodiscriminatebetweenflawtypesuNorequirementtoremovesurfacecoatingsuNorequirementforcouplantbetweenprobeandmaterialsurfaceuSmallsensorsthatcanbe’manipulated’forcomplicatedaccessrequirementsAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide5ApplicationsofECNDTinAerospaceuSurfacebreakingflawdetectionuAirframeuUndercarriageuEnginesuAircraftwheelsAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide6ApplicationsofECNDTinAerospaceuRotatingholeinspectionuManualorrotarydriveuIncrementingdriveuFastenerholes,fastenersremoveduBoltholesonaircraftstructures,undercarriage,wheelsetc.AerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide7ApplicationsofECNDTinAerospaceuSubsurfaceflawdetectionuMulti-layeredaircraftstructures.-Fuselage-Wings-AroundFastenersuPhaseindicatesflawdepthuMagnitudeindicatesflawseverityatdepthAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide8ApplicationsofECNDTinAerospaceuDualfrequencytechniquesuToeliminategeometryeffectsuToeliminatelayerseparationeffectsuAchievedbysubtractingonefrequencysignalfromanother,toremoveunwantedeffectuPerceivedcomplexityofthistechniquehasbeenaproblem,automixhasgonesomewaytoeliminatethisAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide9ApplicationsofECNDTinAerospaceuConductivitymeasurementuRawmaterialssortinguManufacturingprocessverificationuHeatdamageuReferencemeasurementAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide10ApplicationsofECNDTinAerospaceuConductivitymeasurementuAS3000orP2200fromcurrentproductrangeuAS3000temperaturecompensationandsmallprobesuConductivityvaluesnormalisedto20oCAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide11ApplicationsofECNDTinAerospaceuConductivitymeasurementuMaterialthicknessfrequencychoiceuCurvedsurfacecorrectionuAluminiumcladdingthicknesscorrectionuHockinghaveinformationontheabovecorrectionsforAS2000&AS3000AerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide12ApplicationsofECNDTinAerospaceuBoeinghaveapprovedbothAS2000&AS3000AerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide13ApplicationsofECNDTinAerospaceuNonconductivecoatingsonnon-ferrousmetalsuUsedforcalibrationofsurfacecrackdetectionsensitivityuIdentifywherepaintthicknessishighAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide14Whatdowedo?uOurcurrentproductrangeuProbes-Special-StandarduLocatoruPhasec2200&MinidriveuAutoSigma3000uWheelScanMkIVuFastScantechniqueAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide15Whatdowedo?uStandardprobesuHighfrequencysurfacecrackdetection,shieldedandunshieldedLocatortypeprobesuLowfrequencysub-surfaceflawdetectionuRotarydriveboltholeprobesAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide16Whatdowedo?uSpecialprobesuCompressorandturbinebladeinspectionforcracksuAwkwardaccessinspectionuFastScanprobesAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide17AtypicaljetengineAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide18Whatdowedo?uTransmitreceiveslidingprobeuLoopvariationinmagnitudeandphaseindicatessizeandpositionofflawsAerospaceApplicationsHOCKINGeddycurrenttrainingprogrammeSlide19AerospaceinserviceNDTuTheinspectiontechniqueuEquipment-Instrument-Probe-CalibrationsampleuOperatorrequirementsuProcedureuFlawindicationsuDefinitionofDEFECTuDEFECTaction