Title of article
Experimentalinvestigationonductilestablecrackgrowthemanatingfromwire-cutnotchinAISI4340steelOriginalResearchArticle
Author/Authors
A.H.I.Mourad، نويسنده , , M.J.Alghafri، نويسنده , , O.A.AbuZeid، نويسنده , , S.K.Maiti، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
11
From page
637
To page
647
Abstract
Anexperimentalinvestigationonthestablecrackgrowth(SCG)behaviourinAISI4340usingCTtypespecimenwithasharpslit(0.05mm)undermodeIandmixedmodes(IandII)loadingispresented.Theslitwasmadeinthespecimenthroughwirecuttingtechnique.Differentcombinationsofloadingangleϕandratiooforiginalcracklengthtospecimenwidth(a0/W)areexamined.Dataconcernedwithdirectionofinitialcrackextension,load–loadlinedisplacement(L–LLD)diagrams,initiationandmaximumloads,rangeofstablecrackgrowth,cracktipblunting,crackfrontgeometry,fracturesurfacesandtheirscanningelectronmicrographsareobtained.Anoticeablebluntingeffectisobservedpriortocrackinitiation.Althoughthecrackinitiatesfromastraightfront,aconsiderablefronttunnellingeffectoccursasthecrackextends.Undermixedmode,thecrackextensiontakesplaceinitiallyalmostalongastraightpath,inclinedwiththemaincrack.Theloadingangleandinitialcracklengthaffecttheinitiation(Pi)andmaximum(Pmax)loadssignificantly,buttheratiobetweenPmaxandPiremainsalmostconstant.Thedirectionofinitialstablecrackextensionduetomixedmodeloadingisdeterminedthroughoutanelasticfiniteelementanalysis.Thereisagoodagreementbetweentheexperimentalandpredictedresults.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2005
Journal title
Nuclear Engineering and Design Eslah
Record number
894875
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