Progressive Failure Analysis of Pipeline Repaired by Composite Wrapping

Abstract:

Composite overwrap systems have been widely used to repair damaged pipelines. Its effectiveness has been proven by many researches and engineering applications. However, the research on progressive failure mode of the repaired structure has not been reported. In the present paper, finite element method with Hashin failure criteria is developed to realize the progressive failure analysis. The predicted burst pressure is in good agreement with the burst experiment. Different from widely-reported failure progress in Composite Overwrapped Pressure Vessels (COPV), the progressive failure analysis for the defected pipeline overwrapped by composite reveals very different failure stages: stable failure propagation and rapid failure propagation. The identification of critical pressure between these two stages is valuable in composite reparation design for the defected pipeline.

• Periodical: Applied Mechanics and Materials (Volume 853)
• Pages: 483-487
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.853.483
• Online since: September 2016
• Authors: Yan Yv Wang, Zhi Qiang Cheng*, Bao Sheng Liu
• Keywords: Composite Reinforcement, Damage Mode, Hydrostatic Burst Test, Progressive Failure

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