Electromagnetic Testing-Eddy Current-Equipment, Methods and Applications - SPC Volum 2

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1、ElectromagneticTestingEddyCurrent-BasicTheory&Equipment,MethodsandApplications1976’sRQA/M1-5330.12(VolumeI&II)GeorgeC.MarshallSFCMyASNTLevelIIIPre-ExamPreparatorySelfStudyNotes13thApril2015CharlieChong/FionZhangAerospaceApplicationsCharlieChong/FionZhang一本很古远的教材-1976很简易虽然一些方法已经变浮云CharlieChong

2、/FionZhangYear-1976CharlieChong/FionZhangYear-1976CharlieChong/FionZhangCharlieChong/FionZhangFionZhangatShanghai13thApril2015http://meilishouxihu.blog.163.com/CharlieChong/FionZhangGreekletterCharlieChong/FionZhangIVONATTSCapable.CharlieChong/FionZhanghttp://www.naturalreaders.com/tnrreuCydd

3、ECharlieChong/FionZhangINTRODUCTIONThishandbookisoneofaseriesonnondestructivetesting,andisthesecondinasetoftwovolumespresentedonthesubjectofEddyCurrentTesting.Theidentificationandinspectionofbasemetalsandmetalalloyshasbecomeanincreasinglyimportantfactorintheproductionandfabricationofmetalprod

4、ucts.Specialalloys,differingonlyslightlyincompositionandnotatallinappearance,canbeidentified,andinspectedfordiscontinuitiesbytheeddycurrenttestmethod.Applicationsofsomeofthevariouseddycurrenttestingmethodsarepresentedinthisvolume.Somediscussionofthedifferentcoilsthatareusedandtheirphysicaland

5、electricaldesignshouldhelpthereadergetafeelfortheelectromagnetictestingsystems.Theindications,displaysandchartsthatareusedfortestingpurposesaswellassomeoftherequirementsforacceptableteststandardsarealsopresented.Theeddycurrenttestingprogrammedinstructionseries(twovolumes)willprovidesomeoftheb

6、ackgroundmaterialnecessarytotakeyouonestepclosertoyourgoalsintheareaofnondestructivetesting.ThetwovolumesshouldbereadinsequencebecausemuchofthematerialinVolumeIIisbasedonfactslearnedinVolumeI.Year:1967CharlieChong/FionZhangEddyCurrentAneddycurrentisdefinedasacirculatingelectricalcurrentinduce

7、dinanisolatedconductorbyanalternatingmagneticfield.Eddycurrenttestingisbasedonthefactthattheflowofeddycurrentsgeneratesamagneticfieldthatopposesthemagneticfielddevelopedbythetestcoil.Anindicatingdeviceconnectedtoatestcoilwillbeaffectedbytheco