Title of article :
Fatiguestudiesoncarbonsteelpipingmaterialsandcomponents:IndianPHWRsOriginalResearchArticle
Author/Authors :
P.K.Singh، نويسنده , , V.Bhasin، نويسنده , , K.K.Vaze، نويسنده , , A.K.Ghosh، نويسنده , , H.S.Kushwaha، نويسنده , , D.S.R.Murthy، نويسنده , , P.Gandhi، نويسنده , , S.Sivaprasad، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Abstract :
ThispaperdescribestheresultsoffatiguestudiesoncarbonsteelpipingmaterialsandcomponentsofIndianPressurizedHeavyWaterReactors(PHWRs).Thepipingcomponentsincludepipesandelbows,ofouterdiameter219mm,324mmand406mm,madeofcarbonsteel(SA333Gr.6grade)material.Testsonactualpipesandelbowswithpartthroughnotchwerecarriedouttostudythebehaviourofcrackgrowthundercyclicloadingfordifferentpipesizes,notchaspectratios,stressratios,etc.Duringthetests,numbersofcyclesforcrackinitiationfrombluntnotchwererecordedwithanaccuracyof0.1mm.Inconjunctionwithcomponenttests,theexperimentalstudieswerealsoconductedonstandardspecimenstounderstandtheeffectofdifferentvariablessuchassize(thickness),typeofspecimenandcomponents(elbowandpipe),welding,stressratio,notchorientationonfatiguecrackgrowthrate.Thefatiguecrackgrowthcurve(da/dNversusΔK)obtainedfromthree-pointbendspecimenandpipewascomparedwiththatgiveninASMESectionXI.Thecomparisonshowsthatda/dNversusΔKcurvesobtainedfromthespecimenandpipetestsarenearlysame.Theanalyticalpredictionsforcrackinitiationandcrackgrowthforthetestedcomponentswerecomparedwithexperimentalresults.Suchcomparisonsvalidatethemodelingprocedureforcrackinitiationandgrowth.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
