Effects of Composite Patch Geometry on Collapse Load of Pressurized Steel Pipes with Internal Longitudinal Flaws

Abstract:

Abstract. Internal and/or external corrosions may frequently occur in pressurized pipes in offshore engineering components and many other industries. Corrosion defects reduce the collapse load of pipes, which can be improved by composite repairs. In this article, elastic-plastic finite elements analyses of pressurized repaired pipes with internal longitudinal flaws are performed to obtain the plastic collapse loads of them. The effects of composite patch geometries such as thickness and length on the improved collapse loads of repaired pipes are investigated. It is shown that the limit load of the repaired pipes may reach to the un-defected pipe by increasing the patch thickness (i.e. 25% of flaw depth for the pipe and patch material used in this study).

• Periodical: Applied Mechanics and Materials (Volumes 152-154)
• Pages: 381-386
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.152-154.381
• Online since: January 2012
• Authors: Hossein Hosseini-Toudeshky, Ebrahim Fadaei
• Keywords: Collapse Load, Composite Repair, Internal Flaw, Steel Pipes

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