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Sandip Budhe https://orcid.org/0000-0002-3235-9232 S. de Barros https://orcid.org/0000-0002-2520-569X M. D. Banea https://orcid.org/0000-0002-8378-2292

Abstract

The main aim of this work is to predict the theoretical burst pressure of defective pipelines using different semi-empirical models and compare them with the results of the hydrostatic tests. A methodology was formulated with accounting for a minimum thickness (weakest section of the pipe) over the length of the pipe to predict the most conservative burst pressure. With a simple analytical expression, a reasonable accuracy and more conservative burst pressure can be obtained for any arbitrary defect shapes. A variation of burst pressure was found between theoretical prediction and hydrostatic burst test results with respect to the different semi-empirical models even for the same corroded defects. Different defect geometry shapes and pipe material conditions are the possible causes for variation in the burst pressure between the semi-empirical models, so a careful selection of these parameters is necessary. The proposed methodology predicted a more conservative burst pressure for all arbitrary defects shapes and can predict reasonably accurate values if it accounts for the axial stress.

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Section
Failure Analysis, Case Studies and Forensic Engineering

How to Cite

Budhe, S., de Barros, S. and Banea, M. D. (2020) “Prediction of the burst pressure for defective pipelines using different semi-empirical models”, Frattura ed Integrità Strutturale, 14(52), pp. 137-147. doi: 10.3221/IGF-ESIS.52.12.