Correlation of creep crack-tip constraint between axially cracked pipelines and test specimens

2012 ◽  
Vol 98 ◽  
pp. 16-25 ◽  
Author(s):  
J.P. Tan ◽  
G.Z. Wang ◽  
F.Z. Xuan ◽  
S.T. Tu
Keyword(s):  
Crack Tip ◽  
Creep Crack ◽  
Crack Tip Constraint

Analysis of 316H Creep Crack Initiation Data at 550℃ using A Crack Tip Constraint Parameter

2021 ◽  
pp. 107746
Author(s):  
Seung-Ho Lee ◽  
Hyun-Woo Jung ◽  
Yun-Jae Kim ◽  
Kamran Nikbin ◽  
Robert A. Ainsworth
Keyword(s):  
Crack Initiation ◽  
Crack Tip ◽  
Creep Crack ◽  
Crack Tip Constraint

Quantifying the creep crack-tip constraint effects using a load-independent constraint parameter Q*

2016 ◽  
Vol 119 ◽  
pp. 320-332 ◽  
Author(s):  
Lianyong Xu ◽  
Xingfu Zhang ◽  
Lei Zhao ◽  
Yongdian Han ◽  
Hongyang Jing
Keyword(s):  
Crack Tip ◽  
Creep Crack ◽  
Constraint Effects ◽  
Crack Tip Constraint

Characterization of creep crack-tip constraint levels for pressurized pipelines with axial surface cracks

2017 ◽  
Vol 114 ◽  
pp. 98-109 ◽  
Author(s):  
Lianyong Xu ◽  
Xingfu Zhang ◽  
Lei Zhao ◽  
Yongdian Han ◽  
Hongyang Jing
Keyword(s):  
Crack Tip ◽  
Surface Cracks ◽  
Creep Crack ◽  
Pressurized Pipelines ◽  
Crack Tip Constraint ◽  
Axial Surface

Mismatch Effect on the Mixed Mode Type Creep Crack within Weldment

2016 ◽  
Vol 853 ◽  
pp. 281-285
Author(s):  
Jun Hui Zhang ◽  
Yan Wei Dai
Keyword(s):  
Mixed Mode ◽  
Stress Triaxiality ◽  
Crack Tip ◽  
Crack Tip Field ◽  
Creep Crack ◽  
Loading Mode ◽  
The Difference ◽  
Engineering Practices ◽  
Mismatch Effect ◽  
Transient And Steady State

Creep crack within weldments are very common in engineering practices, and the cracking location in these welding structures always appears at the HAZ location. The mismatch effect on the mixed mode creep crack is still not clear in these available literatures. The aim of this paper is to investigate the mismatch influence on the creep crack of mixed mode thoroughly. A mixed mode creep crack within HAZ is established in this paper. The leading factor that dominates the creep crack tip field under mixed loading mode is studied. The influences of mismatch effect on mode mixity, stress distribution and stress triaxiality are proposed. The difference of mixed mode creep crack and normal mode I or mode II creep crack are compared. The influence of mixity factor on the transient and steady state creep of crack tip are also analyzed.

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