Testing and Inspection of welds英文文献资料

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1、TheUniversityofGaziantepTESTINGANDINSPECTIONOFTESTINGANDINSPECTIONOFWELDSWELDSME473WELDINGTECHNOLOGYInstructor:Asist.Prof.Dr.OğuzhanYILMAZDepartmentofMechanicalEngineeringWeldingTechnologyTesting&InspectionMethodsTesting&InspectionMethods¢DestructiveTests£Tensiontest£Nick-Breaktest£Bendtes

2、t£Hardnesstest£Fatiguetest£Impacttest¢NondestructiveTests(NDT)£Visualexaminations£Radiographytesting¢Gamma-ray¢X-Ray£Magnetictesting£Ultrasonicinspection£Penetrantexaminations£Stethoscopetest£Eddy-CurretInspection2Dr.OğuzhanYılmazWeldingTechnologyTesting&InspectionMethodsTesting&Inspection

3、Methods¢Testsmustbemadetoqualifytheprocess(es)andtheoperators.¢Inspectionusuallyinvolvestheexaminationofcompletedweldstoestablishtheirqualityandtheirconfirmationtospecifications.¢Thus,testingandinspectiondetermineswhetherornotthequalitystandartsofmaterialsandworkmanshiparebeingmet.¢Inwelde

4、djoints,thecomplexityisfurtherincreasedbythenatureofthejointwhichisfarfromhomogeneous,metallurgicallyorchemically.Inadditiontothebasemetal,theweldedjointconsistsofweldmetalandaheat-affected-zone.Avarietyofpropertiesarethustobeexpectedthroughouttheweldedjoint.¢Mechanicaltestsareusedtoqualif

5、yweldingprocedures,welders,andweldingprocesses,andtodetermineifelectrodesandfillermetalsmeettherequirementsofthespecification.¢Weldsinweldmentsareoftentestedforsoundness,strength,andtoughnessbymechanicaltests.¢Mechanicaltestsaredestructivetestssincetheweldjointisdestroyedinmakingthetest.Th

6、etestspecimen(coupon)maybetakenfromacompletedjointinaweldedstructureorfromatestpieceweldedatthesameconditions.3Dr.OğuzhanYılmazWeldingTechnologyWeldTensiontestWeldTensiontest¢Weldingresultsinmetallurgical(andoftencompositional)differenciesintheweldjoint,anditisimportanttoknowtheeffectsofth

7、esechangeson,mechanicalproperties.¢ThetensiontestingofweldsissomewhatmoreinvolvedthanforbasemetalbacauseTransverseweldspecimenpreparationtheweldtestsectionisheterogeneousinnature,composedofthedepositeweldmetal,theHAZandtheuneffectedbasemetal.¢Tensiletestspecim