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Applied Composite Materials

, Volume 25, Issue 2, pp 321–334 | Cite as

Finite-Element Analysis of Crack Arrest Properties of Fiber Reinforced Composites Application in Semi-Elliptical Cracked Pipelines

  • Linyuan Wang
  • Shulei Song
  • Hongbo Deng
  • Kai Zhong
Article
  • 446 Downloads

Abstract

In nowadays, repair method using fiber reinforced composites as the mainstream pipe repair technology, it can provide security for X100 high-grade steel energy long-distance pipelines in engineering. In this paper, analysis of cracked X100 high-grade steel pipe was conducted, simulation analysis was made on structure of pipes and crack arresters (CAs) to obtain the J-integral value in virtue of ANSYS Workbench finite element software and evaluation on crack arrest effects was done through measured elastic-plastic fracture mechanics parameter J-integral and the crack arrest coefficient K, in a bid to summarize effect laws of composite CAs and size of pipes and cracks for repairing CAs. The results indicate that the K value is correlated with laying angle λ, laying length L2/D1, laying thickness T1/T2of CAs, crack depth c/T1 and crack length a/c, and calculate recommended parameters for repairing fiber reinforced composite CAs in terms of two different crack forms.

Keywords

Pipeline repair Semi-elliptical surface crack Composite materials ANSYS J-integral 

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Copyright information

© Springer Science+Business Media B.V. 2017

Authors and Affiliations

  1. 1.College of Chemistry and Chemical EngineeringSouthwest Petroleum UniversityChengduChina

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