Title of article :
The effect of constraint on CTOD fracture toughness of API X65 steel
Author/Authors :
Han، نويسنده , , Kejiang and Shuai، نويسنده , , Jian and Deng، نويسنده , , Xiaomin and Kong، نويسنده , , Lingzhen and Zhao، نويسنده , , Xing and Sutton، نويسنده , , Michael، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Abstract :
Constraints ahead of crack tips and the effect of specimen thickness on the critical CTOD (the CTOD fracture toughness) in SENB specimens are studied. The effect of constraint on CTOD fracture toughness is quantified using a Gurson type void model. Based on the effect of the SENB specimen thickness on CTOD fracture toughness and on the stress constraint ahead of the crack tip, a constraint-based fracture failure criterion for API X65 steel is proposed. Compared with the results of finite element simulations of SENT specimens and pipelines, prediction errors of the constraint-based fracture failure criterion are within 10%.
Keywords :
The stress constraint , Crack tips , CTOD fracture toughness , The critical CTOD , SENB specimens , SENT specimens
Journal title :
ENGINEERING FRACTURE MECHANICS
Journal title :
ENGINEERING FRACTURE MECHANICS
