TY - JOUR
T1 - The effect of complex crack shape on crack driving forces and crack tip stress fields
T2 - Experiment and FE analysis
AU - Kim, Seung Jae
AU - Bae, Kyung Dong
AU - Kim, Yun Jae
AU - Ryu, Ho Wan
AU - Kim, Jin Weon
AU - Oh, Young Jin
N1 - Funding Information:
This work was supported by the Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning ( KETEP ), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea. (No. 20131520202170 ).
Publisher Copyright:
© 2020 Elsevier Ltd
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/8
Y1 - 2020/8
N2 - This paper presented the effect of the complex crack shape on crack driving forces and crack tip stress fields, via experimental and numerical analysis results of the complex cracked tension (CC(T)) specimens. Fracture tests using CC(T) specimens are conducted using SA508 Gr.1a low-alloy steel, from which detailed crack shapes are measured before crack initiation and after crack growth. It is found that, after pre-cracking, the complex crack changes its shape such that elastic-plastic J and crack tip stresses become uniform along the crack front. The crack front shape remains similar during crack growth, so that elastic-plastic J and crack tip stresses remain uniform along the crack front.
AB - This paper presented the effect of the complex crack shape on crack driving forces and crack tip stress fields, via experimental and numerical analysis results of the complex cracked tension (CC(T)) specimens. Fracture tests using CC(T) specimens are conducted using SA508 Gr.1a low-alloy steel, from which detailed crack shapes are measured before crack initiation and after crack growth. It is found that, after pre-cracking, the complex crack changes its shape such that elastic-plastic J and crack tip stresses become uniform along the crack front. The crack front shape remains similar during crack growth, so that elastic-plastic J and crack tip stresses remain uniform along the crack front.
KW - Complex crack shape
KW - Complex cracked tension specimen testing
KW - Crack tip stress field
KW - Finite element analysis
KW - Fracture mechanics parameters
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U2 - 10.1016/j.ijpvp.2020.104135
DO - 10.1016/j.ijpvp.2020.104135
M3 - Article
AN - SCOPUS:85086578389
VL - 185
JO - International Journal of Pressure Vessels and Piping
JF - International Journal of Pressure Vessels and Piping
SN - 0308-0161
M1 - 104135
ER -