Estimation Model for Fatigue Life of Pipeline Steel with Mechanical Damage

Abstract:

It is impossible to keep pipelines free from mechanical damage in the manufacturing, installation and servicing processes. In this paper, the geometric model for fatigue life of pipeline steel was introduced. The local plastic deformation was considered to imitate the mechanical damage on the pipe. The estimation models of the fatigue crack initiation life and the fatigue crack propagation life were proposed according to the plastic deformation. The result is expected to be beneficial to the understanding of the effect of damage on the safety of pipelines and fatigue life prediction.

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 1716-1719
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.1716
• Online since: June 2012
• Authors: Yu Rong Jiang, Mei Bao Chen
• Keywords: Crack Initiation, Crack Propagation, Fatigue Life, Mechanical Damage, Pipeline Steel

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