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Estimation of Burst Pressure of Corroded Pipeline Using Finite Element Analysis (FEA)

Zahari, Mohamad Armiya (2011) Estimation of Burst Pressure of Corroded Pipeline Using Finite Element Analysis (FEA). Universiti Teknologi Petronas. (Unpublished)

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Abstract

Pipelines are used to transmit fluid from one point to another. One major concern of maintaining pipelines integrity is failure due to corrosion defects. Corrosion is one of the common defects in pipes which can be observed externally or internally. Several methods and codes had been established to provide solutions in assessing the corroded pipes. This includes the assessment of remaining strength of the corroded pipeline which has been used for used in decades, ASME B31G. This code is referred in evaluation of metal loss in pressurized pipes and piping systems. Another code, the recommended practice DNV-RP-FlOl is used to evaluate the remaining strength of corroded pipes which has single defect, multiple defects and complex shape defects. This study is associated with the process to estimate the burst pressure of corroded pipeline by using Finite Element Analysis (FEA). The corroded pipe undergoes UTScan and the thickness along the pipe's internal surface is measured and the corrosion profile is plotted. FEA is used to resemble the experimental procedure of actual burst test. Several models are built and simulated by considering defect shape, defect depth and analysis type as parameter to distinguish every simulations. All models are properly constraint and pressurized internally thus, the maximum allowable burst pressure (Ph) of corroded pipeline is determined. The result obtained by FEA is analyzed, studied and compared with the actual burst test, ASME B31G and DNV-RP-FlOl. Lastly, the best model of ANSYS simulation is determined from the simulation.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Materials - Corrosion engineering - Corrosion of metals
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Users 2053 not found.
Date Deposited: 30 Sep 2013 16:55
Last Modified: 25 Jan 2017 09:41
URI: http://utpedia.utp.edu.my/id/eprint/7353

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