Evaluation of stress-strain state and in-service repair of a damaged pipeline

Abstract

During the operation and servicing of hydrocarbons transmission pipelines, a plenty of engineering problems arise. One of them is the repair of various defects in the pipeline, such as defects occurring in welds, damages caused by external mechanical impact, cracks and surface corrosion defects. In the present study, we have considered several problems for the damaged pipeline with one or two volumetric surface defects, subjected to internal pressure loading. In all the cases, it was considered that the defects were caused by surface corrosion and that they were subsequently exposed to a mechanical treatment in order to eliminate the stress concentration effects. The problem of an optimal repair system for a pipe based on its wrapping via laminate composite is considered. The analysis of the most efficient repair wrap properties is performed; some practical recommendations are provided.

Original document

The different versions of the original document can be found in:

• http://dx.doi.org/10.1063/1.4967099

• https://aip.scitation.org/doi/pdf/10.1063/1.4967099

• https://aip.scitation.org/doi/abs/10.1063/1.4967099,

https://academic.microsoft.com/#/detail/2560841099