ic(EM)NondestructiveEvaluation(NDE) Toenablethestudentstojudgetheapplicability,advantages,disadvantages,,studentsshouldbeabletounderstandthe:1 fundamentalphysicalprinciplesofEMNDEmethods2 operationofbasicEMNDEtechniques3 functionsofsimpleEMNDEinstruments4 mainapplicationsofEMNDESyllabus1 ' , ;conductivity,permeability,andthicknessmeasurement, ,permeability,remanence,coercivity,, icgenerationanddetectionofultrasonicwaves,icacoustictransducers(EMATs). Maxwell' ,Coulomb'sLawxzyrQ2Q1FeFeFe CoulombforceQ1,Q2 harges(ne,e10-19As)er unitvectordirectedfromthesourcetothetargetr distancebetweenthechargesε permittivity(ε0≈10-12As/Vm)xdQ2Q1FeρdρrinfinitewallofuniformchargedensityqindependentofxElectricField,PlaneElectrodesQtFexzyinfinitewallofuniformchargedensityqE+Q-QAlchargedparallelplaneelectrodesQElectricField,PointSourcesmonopole+Qs+Qs-Qs+Qs-QsdE1E2E1dipoleElectricFieldofDipoleRz+Qs-Qsdθrr+rPEzEREElectricDipoleinanElectricField+Q-QpeFeEpe electricdipolemomentQ harged distancevectorE electricfieldFe CoulombforceTe twistingmomentortorqueFe
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