Title of article
RuptureofspentfuelZircaloycladdingindrystorageduetodelayedhydridecrackingOriginalResearchArticle
Author/Authors
C.K.Chao، نويسنده , , K.C.Yang، نويسنده , , C.C.Tseng، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
6
From page
124
To page
129
Abstract
DelayedhydridecrackingintheZircaloyalloyhasbeenconsideredasapossibledegradationmechanismofspentnuclearfuelcladdingininterimdrystorage.Somerecentin-corefuelfailuresindicatedthatalongaxialcrackdevelopedinthecladdingwasasecondaryfailurebydelayedhydridecracking.TheaimofthisstudyistodefinetheeffectsofhydridereorientationonthefailureofZircaloycladding.Differenthydrideorientations,theamountofzirconiumhydrideandvariouscrackingtypes,allhavebeenconsideredfortheireffectsonthecrackgrowthandstabilityofthecladding,andhavebeenthoroughlydiscussedinthispaper.Afiniteelementcomputercode,ANSYS,hasbeenusedinconjunctionwiththestrainenergydensitytheory.Insummary,thecrackpropagationwillbeaggravatedifthehydrideorientationisshiftedfromthecircumferentialtotheradialdirection.Foralargercracklength,thezirconiumhydrideplaysanimportantroleinaffectingthecrackgrowthbecausethestrainenergydensityfactorincreasesasthehydrideapproachesthecracktip.Furthermore,whenthermaleffectsareconsidered,acompressivestressexistsattheinnersideofthecladding,whileatensilestressisfoundattheoutersideofcladding,thusresultingincrackpropagationfromtheoutersidetotheinnersideofthecladding.Thesefindingsareinaccordancewithotherexperimentalresultsinrelatedliterature.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
894986
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