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|Title:||Prediction of the fatigue crack propagation in large-scale tubular joint specimens|
|Authors:||Qian, X. |
Fatigue crack propagation
|Source:||Qian, X.,Nguyen, C.T. (2012). Prediction of the fatigue crack propagation in large-scale tubular joint specimens. Proceedings of the International Offshore and Polar Engineering Conference : 180-186. ScholarBank@NUS Repository.|
|Abstract:||This article presents a numerical investigation on the fatigue crack propagation observed at the weld toe of large-scale circular hollow section (CHS) X-joints subjected to constant-amplitude brace in-plane bending. The finite element (FE) approach utilizes detailed crack-front meshes and examines the effect of the crack propagation angle and the crack-front profile on the fatigue driving force measured by the stressintensity factors. The numerical procedure then estimates the crack propagation life based on Paris law, which agrees closely with the experimental results. This investigation demonstrates that the fatigue crack orientates in a direction where mode I fatigue driving force remains predominant. Copyright © 2012 by the International Society of Offshore and Polar Engineers (ISOPE).|
|Source Title:||Proceedings of the International Offshore and Polar Engineering Conference|
|Appears in Collections:||Staff Publications|
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