CFRP repair effectiveness on compressed steel tubular members with circular cutout

Jorge Luis Martinez; Julio Cesar Ramalho Cyrino; Murilo Augusto Vaz; Irving David Hernández; Victor Daniel Torres; Valber A. Perrut; Gustavo Gomes de Paula

doi:10.1590/1679-78257357

CFRP repair effectiveness on compressed steel tubular members with circular cutout

Authors

Jorge Luis Martinez Programa de Engenharia Oceânica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil https://orcid.org/0000-0002-4902-1481
Julio Cesar Ramalho Cyrino Programa de Engenharia Oceânica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil https://orcid.org/0000-0002-5395-1171
Murilo Augusto Vaz Programa de Engenharia Oceânica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil https://orcid.org/0000-0002-3993-1529
Irving David Hernández Programa de Engenharia Oceânica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil https://orcid.org/0000-0001-5523-8399
Victor Daniel Torres Programa de Engenharia Oceânica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil https://orcid.org/0000-0003-1866-2961
Valber A. Perrut PETROBRAS/CENPES, Rio de Janeiro, RJ, Brasil https://orcid.org/0000-0002-1894-999X
Gustavo Gomes de Paula PETROBRAS/CENPES, Rio de Janeiro, RJ, Brasil

DOI:

https://doi.org/10.1590/1679-78257357

Abstract

Welding procedures for repairing corroded tubular structures are commonly used; however, composite material repairs are becoming popular since they do not use heat sources that might cause accidents. This paper provides a detailed description of the CFRP patch repair application in steel tubular members with a circular perforation originated from a prolonged corrosion process. The results of experimental tests on mid-scale unrepaired damaged and repaired steel tubes are reported. The predictions of the maximum loads recovered from a proposed numerical model lie close to the experimental observed values, justifying its usage for analysis of repaired tubular structures with circular cutouts when subjected to axial compression. Compared to unrepaired perforated tubes, the experimental results demonstrate a substantial strength recovery for repaired tubes. The value of this research for the oil and gas industry is that it demonstrates the feasibility of this kind of repair, which means reduced risk to the production unit and a shorter repair period.

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Published

2023-02-07

Issue

Vol. 20 No. 2 (2023)

Section

Articles

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