TY - JOUR
T1 - Strength mis-match effect on limit loads for circumferential surface cracked pipes
AU - Kim, Jong Sung
AU - Song, Tae Kwang
AU - Kim, Yun Jae
AU - Jin, Tae Eun
N1 - Funding Information:
This research is performed under programs of Basic Atomic Energy Research Institute and Engineering Research Center (No. R11-2007-028-00000-0), funded by Korea Science & Engineering Foundation.
PY - 2009/5
Y1 - 2009/5
N2 - The present work provides mis-match limit loads for welded pipes with constant-depth, circumferential part-through surface cracks in the centre of the weld metal. As limiting cases, circumferential through-wall and fully circumferential cracks are also considered. Based on systematic finite element limit analyses, mis-match limit loads are quantified by the strength mis-match ratio and only one geometry-related slenderness parameter, not requiring additional geometry-related parameters. This implies that mis-match limit loads for surface cracked pipes can be found from those for idealized axi-symmetric problems, which offers significant benefit in assessment of surface cracks in welds of pipes.
AB - The present work provides mis-match limit loads for welded pipes with constant-depth, circumferential part-through surface cracks in the centre of the weld metal. As limiting cases, circumferential through-wall and fully circumferential cracks are also considered. Based on systematic finite element limit analyses, mis-match limit loads are quantified by the strength mis-match ratio and only one geometry-related slenderness parameter, not requiring additional geometry-related parameters. This implies that mis-match limit loads for surface cracked pipes can be found from those for idealized axi-symmetric problems, which offers significant benefit in assessment of surface cracks in welds of pipes.
KW - Circumferential part-through surface cracked pipe
KW - Finite element analysis
KW - Mis-match limit load
KW - Reference stress based J estimates
KW - Strength mis-match
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U2 - 10.1016/j.engfracmech.2009.01.008
DO - 10.1016/j.engfracmech.2009.01.008
M3 - Article
AN - SCOPUS:67349231374
SN - 0013-7944
VL - 76
SP - 1074
EP - 1086
JO - Engineering Fracture Mechanics
JF - Engineering Fracture Mechanics
IS - 8
ER -