TY - GEN
T1 - A method of J testing based on crack opening displacement for circumferential through-wall cracked pipes under combined tension and bending
AU - Huh, Nam Su
AU - Stumpfrock, Ludwig
AU - Roos, Eberhard
AU - Kim, Yun Jae
AU - Kim, Young Jin
N1 - Publisher Copyright:
© (2006) Trans Tech Publications, Switzerland.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2006
Y1 - 2006
N2 - Application of the leak-before-break concept to nuclear piping requires accurate fracture mechanics assessment on pipes with postulated circumferential through-wall crack subject to combined tension and bending. One important element is determination of relevant J-resistance curve for pipes under combined loading. This paper provides experimental J estimation method for the circumferential through-wall cracked pipe under combined tension and bending, based on the load-crack opening displacement (COD) record to estimate J-resistance curve. To give confidence in the proposed method, the J results from detailed elastic-plastic finite element (FE) analysis are also compared with estimated J based not only on proposed method but also on conventional method using load-load line displacement, which shows that estimated J based on the proposed method provides reliable J estimates regardless of analysis condition, on the other hand, the conventional method using the load-load line displacement record gives erroneous results for shallow cracks.
AB - Application of the leak-before-break concept to nuclear piping requires accurate fracture mechanics assessment on pipes with postulated circumferential through-wall crack subject to combined tension and bending. One important element is determination of relevant J-resistance curve for pipes under combined loading. This paper provides experimental J estimation method for the circumferential through-wall cracked pipe under combined tension and bending, based on the load-crack opening displacement (COD) record to estimate J-resistance curve. To give confidence in the proposed method, the J results from detailed elastic-plastic finite element (FE) analysis are also compared with estimated J based not only on proposed method but also on conventional method using load-load line displacement, which shows that estimated J based on the proposed method provides reliable J estimates regardless of analysis condition, on the other hand, the conventional method using the load-load line displacement record gives erroneous results for shallow cracks.
KW - Circumferential Through-Wall Cracked Pipe
KW - Combined Tension and Bending
KW - Crack Opening Displacement
KW - J Testing
KW - Plastic η-factor
UR - http://www.scopus.com/inward/record.url?scp=84954425790&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84954425790&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/SSP.110.63
DO - 10.4028/www.scientific.net/SSP.110.63
M3 - Conference contribution
AN - SCOPUS:84954425790
SN - 9783908451150
T3 - Solid State Phenomena
SP - 63
EP - 70
BT - Advances in Safety and Structural Integrity 2005
A2 - Kim, Young-Jin
PB - Trans Tech Publications Ltd
T2 - International Symposium on Safety and Structural Integrity, 2005
Y2 - 17 January 2005 through 20 January 2005
ER -