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Determination of critical pressure for full scale PE gas pipe using small scale test results

Author(s): Z. Zhuang & P.E. O'Donoghue Abstract: The Small Scale Steady State (S4) test has been recently developed in order to assess the fracture behaviour of polyethylene (PE) gas distribution pipe material during rapid axial crack propagation. Based on an investigation of the S4 test, a simulation model of S4 test has been developed. This paper describes the use of the results obtained from the S4 test to evaluate the fracture toughness of the material, Gj, and to predict critical pressure, p^, for rapid crack propagation (RCP) in a full-scale pipe. If PC has been determined, then crack propagation can be prevented. This will ensure that a crack will arrest shortly after initiation, thus limiting the damage. In addition, procedu... Pages: 8 Size: 713 kb Paper DOI: 10.2495/LD960951

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Download the Full Article This article is part of the WIT OpenView scheme and you can download the full text Adobe PDF article for FREE by clicking the 'Openview' icon to the right.