Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/91318
Title: Prediction of the fatigue crack propagation in large-scale tubular joint specimens
Authors: Qian, X. 
Nguyen, C.T.
Keywords: Constant-amplitude load
Fatigue crack propagation
Paris law
Stress-intensity factor
Tubular joints
Issue Date: 2012
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
URI: http://scholarbank.nus.edu.sg/handle/10635/91318
ISBN: 9781880653944
ISSN: 10986189
Appears in Collections:Staff Publications

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