Title of article :
Optimumlocalfailuremodelofsteamgeneratortubeswithmultipleaxialthrough-wallcracksOriginalResearchArticle
Author/Authors :
SeongInMoon، نويسنده , , YoungJinKim، نويسنده , , JinHoLee، نويسنده , , YounWonPark، نويسنده , , MyungHoSong، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Abstract :
Itiscommonlyrequiredthatsteamgeneratortubeswall-thinnedinexcessof40%shouldbeplugged.However,thepluggingcriteriaareknowntobetooconservativeforsomelocationsandtypesofdefectsanditsapplicationisconfinedtoasinglecrack.Inthepreviousstudy,acrackcoalescencemodelapplicabletosteamgeneratortubeswithtwocollinearaxialthrough-wallcrackswasproposedandacoalescenceevaluationdiagramwasdevelopedwhichcanbeusedtodeterminewhethertheadjacentcracksdetectedbyNDEcoalesceornot.Inthispaper,atotalof9localfailuremodelsincludingflowstressmodel,necking-basedmodel,stress-basedmodel,reactionforcemodelandplasticzonecontactmodelwereintroducedtodeterminetheoptimumlocalfailuremodel.Plasticcollapsetestsandfiniteelementanalysesusingthinplateswithtwocollinearthrough-wallcrackswereperformedfortheselectionoftheoptimumlocalfailuremodel.Bycomparingthetestresultswiththepredictionresultsobtainedfromlocalfailuremodels,thereactionforcemodelandplasticzonecontactmodelweredeterminedastheoptimumlocalfailuremodels.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
