Determination of stresses for repairing crack lengths with and without single composite patch by finite elements method

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TitreDetermination of stresses for repairing crack lengths with and without single composite patch by finite elements method
Publication TypeCommunication International
Year of Publication2013
AuthorsMeriem-Benziane, M, Zahloul, H, Gadi, I
Mots-clésadhesive, API X65, Crack, patch, Pipeline, finite elements
Abstract

In this work, the finite elements method is used for the determination of the stress intensity factor (SIF) and stresses (radial and circumferential) with and without patch. This study is aimed, to compare the design of single composite patch and without patch for repairing cracked API X65 pipeline. The obtained results show that, when the 5 and 65 mm longitudinal crack are applied, the single patch presents lower stress intensity factor for the entire crack tip. Furthermore, the radial and circumferential stresses are higher for the case of the single patch then without patch. The procedure eventually, given by the single patch technique, can be very significant and this method depends on the patch geometry and the adhesive characteristics.

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