基于有限元分析的螺紋漏磁檢測方法研究.pdf

1、華中科技大學碩士學位論文基于有限元分析的螺紋漏磁檢測方法研究姓名：周奇申請學位級別：碩士專業(yè)：機械電子工程指導教師：康宜華武新軍20060601華中科技大學碩士學位論文IIAbstractEndeffectinspectionblindareaexistintheinspectionofRodPipeendbytraditionalMFLinspectionmethodsoanewmethodmustberesearchedtoinsp

2、ectthosespecialarea.ANSYSwhichisaveryprevalentfiniteelementanalysis(FEA)softwareisusedtocalculatesimulatethecoilmagizationmagiccircuitdesignnewmagizingmethodmagicinducingmethodwhichcanreducethelimitationoftraditionalMFLi

3、nspectionmethod.Inthepaperamethodofthreadinspectiontheprimarytestresultwasgiven.FirstlythebasictheyofMFLthebasicstructureofMFLinspectionareintroduced.TheestablishmentofMathematicmoduletheanalysisofloadboundaryconditionsb

4、asedonthetheyoffiniteelementanalysiselectromagicareindicated.ThesoftwarekitofEmaginANSYSisedastheanalysistool.Secondlytheprocessofmodelestablishmentanalyzingofthe2Dfiniteelementmodelarenarratedtheanalysisresultisgiven.Af

5、teranalysiscalculationthesizeacteristicsofMFLtypesignalhavebeengot.Validityofthemodelarevalidatedbytheexperimentaldata.ThirdlyAFEAmodeltoanalyzedesignthegeometricalsizeofmagizerofdrillpipethreadsinspectionisintroduced.Th

6、einfluenceofthegeometricsizeofthemagizeronpinthreadmagizationofdrillpipeinmagiccircuitdesignisanalyzed.Theresultcanbeusedinmagiccircuitdesignfimprovingmagiceffecttestingsensitivityfprovidingamethodfoptimizingthemagizatio

7、ndesigninMFLinspectionprobe.FinallycombiningFEAwithsignalprocessinganewmethodtoinspectsuckerrodthreadisintroducedusingferromagicauxiliaryrodtoconnecttheendofrotatingsuckerrodfixedprobetodetecttheMFLsignal.Keywds:SuckerRo