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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.

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