Title of article
Developmentofsimplifiedevaluationmethodforcreep-fatiguecrackpropagationOriginalResearchArticle
Author/Authors
NaokiMiura، نويسنده , , YukioTakahashi، نويسنده , , YasunariNakayama، نويسنده , , KenichiFujishita، نويسنده , , TakashiShimakawa، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
8
From page
435
To page
442
Abstract
Inthedesignassessmentoffastreactorplantcomponents,preventionofcrackinitiationfromdefect-freestructuresisamainconcern.However,existenceofinitialdefectssuchaswelddefectscannotbeentirelyexcludedandthispotentialcracksaretobeevaluatedtodetermineifinitiatedcracksdonotleadtocomponentfailureinstantly.Therefore,evaluationofstructuralintegrityinthepresenceofcrack-likedefectsisalsoimportanttocomplementtheformaldesignassessment.Theauthorshavebeendevelopingaguidelineforassessinglong-termstructuralintegrityoffastreactorcomponentsusingdetailedinelasticanalysisandnonlinearfracturemechanics.Thisguidelineconsistsoftwoparts,evaluationofdefect-freestructuresandflawevaluation.Inthelatter,creep-fatigueisconsideredtobeoneofthemostessentialdrivingforceforcrackpropagationathighoperatingtemperatureexceeding500°C.TheusesofJ-integral-typeparameters(fatigueJ-integralrangeandcreepJ-integral)arerecommendedtodescribecreep-fatiguecrackpropagationbehaviorintheguideline.Thispapergivesanoutlineofthesimplifiedevaluationmethodforcreep-fatiguecrackpropagation.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
895016
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