|
|
金属学报(英文版) 1998
A DCPD TECHNIQUE FOR LOCALIZED CREEP DAMAGE IN NOTCHED BARSKeywords: creep damage mechanics,notched round bar,creep damage measurement Abstract: 1.IntroductionActualstructuralcomponentsoftencontainsectiondiscontinuitiesandstressraiserswhichcauselocalstressconcentration.Therearealsopossiblysomedefectswhichcreatelocalizeddamageinmaterials.Ithasbeenwidelyacknowledgedthatthematerialsshowthedifferentbehaviorsundercomplexstressfromundersimpletensilestress.Itisnecessarytoinvestigatethelocaldamageundermulti-axialstressusingacircumferentiallynotchedroundbar.Itisatraditionalmethodtotestmaterialstrengthatelevatedtemperaturesthroughcommoncreeptes…
|
