Finite element modeling of wet lay-up CFRP patch repaired corroded offshore steel jacket member

Mahdi Razavi Setvati, Zahiraniza Mustaffa, Nasir Shafiq, Biramarta Isnadi, Zubair Imam Syed

Research output: Chapter in Book/Report/Conference proceedingConference contribution


As the development and application of fiber reinforced polymer (FRP) composite materials to different engineering structures are increasing, composite patching techniques are being considered as alternatives to traditional methods of repair to Jacket-type steel structures. The present paper describes a developed finite element model (FEM) of corroded tubular steel member, representative of offshore steel jacket member, and a FEM of wet lay-up CFRP patch repaired corroded tubular steel member using ANSYS software and ANSYS Composite PrepPost (ACP), which is an add-on module to ANSYS software. The numerical study results reveal that the three-ply composite patch reduces the maximum von-Mises stress, maximum stress intensity and maximum shear stress of the corroded tubular steel member by approximately 20.6%, 18.2% and 18.2%, respectively. Moreover, ply-wise stress and strain results indicate that maximum tensile stress and strain was observed in the first ply and maximum compressive stress and strain was noticed in the third ply. Failure analysis demonstrated that under first applied load and moment there is no critical region or critical failure criteria in composite patch, but under increased axial load of 1300 KN, composite patch fails.

Original languageEnglish
Title of host publicationOffshore Technology Conference Asia 2016, OTCA 2016
PublisherOffshore Technology Conference
Number of pages10
ISBN (Print)9781510830721
Publication statusPublished - 22 Mar 2016
EventOffshore Technology Conference Asia 2016 - Kuala Lumpur, Malaysia
Duration: 22 Mar 201625 Mar 2016

Publication series

NameOffshore Technology Conference Asia 2016, OTCA 2016


ConferenceOffshore Technology Conference Asia 2016
Abbreviated titleOTCA 2016
CityKuala Lumpur


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