Title of article :
EffectofloadingrateuponfracturebehaviorofferriticsteelunderlargescaledyieldingOriginalResearchArticle
Author/Authors :
Ki-JuKang، نويسنده , , Si-YoungKim، نويسنده , , Heon-JoongKim، نويسنده , , Dae-YeulJeung، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Abstract :
Dynamicloadingtoferromagneticmaterialsandlargescaledyieldingresultinpeakorvalleyandnon-linearcurve,respectively,ontheDirectCurrentPotentialDrop(DCPD)versusCrackOpeningDisplacement(COD)plots,whichmakeitdifficulttodeterminethecrackinitiationpoint.Inthisworkhighintensityofcurrentupto100AwasappliedtothespecimensofSA106Gr.Cferriticsteelandthecrackgrowthbehaviorwasdirectlymonitoredbyahighspeedcameratoobtainthecrackinitiationpoint.Theeffectsofloadingrateupto1200mmmin−1uponthefractureresistancewereexplored.Astheresults,ithasbeenshownthat,althoughnosubstantialdifferencewasseenintheload–CODplots,thecrackinitiationandthenJiandJ–Rcurvewerequitesensitivetotheloadingrate.Thatis,undertheloadingrateof300mmmin−1thematerialshowedtheworstfractureresistancethanunderstaticloadingandevenunderthehigherloadingratesof600and1200mmmin−1.AlsoapplyingthehighspeedcameraandhighcurrentsourcehavebeenprovedtobeaneffectivewaytofindouttheaccuratecrackinitiationpointandtocompensatethepulseofDCPDduetotheferromagneticeffect.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
