ISO 17640-2017 Non-destructive testing of welds - UT - Techniques,testing levels

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1、INTERNATIONALISOSTANDARD17640Thirdedition2017-10Non-destructivetestingofwelds—Ultrasonictesting—Techniques,testinglevels,andassessmentEssaisnondestructsifdesassemblagessoudés—Contrôleparultrasons—eTchniques,niveauxd'essaietévaluationReferencenumberISO17640:2017(E)©ISO2017ISO17640:2

2、017(E)GetmoreFREEstandardsfromStandardSharingGroupandourchatsCOPYRIGHTPROTECTEDDOCUMENT©ISO2017,PublishedinSwitzerlandAllrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopyi

3、ng,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO’smemberbodyinthecountryoftherequester.ISOcopyrightofficeCh.deBlandonnet8•CP401CH-1214Vernier,Geneva,SwitzerlandTel.+41227490111Fax+41227490947copyright@is

4、o.orgwww.iso.orgi©ISO2017–AllrightsreservedISO17640:2017(E)ContentsPageForeword.....iv1Scope.....12Normativereferences....13Termsanddefinitions....24Symbols.....25Principle.....36Informationrequiredpriortotesting...36.1Itemstobespecified....36.2Specificinformationrequiredbeforetest

5、ing...36.3Writtentestprocedure....47Requirementsforpersonnelandequipment...47.1Personnelqualifications....47.2Testequipment....47.3Probeparameters....47.3.1Testfrequency....47.3.2Anglesofincidence...47.3.3Elementsize....57.3.4Adaptationofprobestocurvedscanningsurfaces..57.3.5Coupli

6、ngmedia....58Testingvolume....59Preparationofscanningsurfaces...610Parentmetaltesting....611Rangeandsensitivityseting....711.1General....711.2Referenceforsensitivitysetting...811.3Evaluationlevels....911.4Transfercorrection....911.5Signal-to-noiseratio....912Testinglevels.....913Te

7、stingtechniques....1013.1General....1013.2Manualscanpath....1013.3Testingforimperefctionsperpendiculartothetestingsurface..1013.4Locationofdiscontinuities...1013.5Evaluationofindications....1013.5.1General....1013.5.2Maximumechoamplitude...1013.5.3Discontinuitylength...1113.5.4Disc

8、ontinuityheight....1113.5.