Comparative studies for failure pressure prediction of corroded pipelines

Motta, Renato de Siqueira; Cabral, Hélder L. D.; Afonso, Silvana Maria Bastos; Willmersdorf, Ramiro Brito; Bouchonneau, Nadège; Lyra, Paulo Roberto Maciel; Andrade, Edmundo Q. de

doi:10.1016/j.engfailanal.2017.07.010

Cited by 48 publications

(15 citation statements)

References 9 publications

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“…The pipelines considered in this work are made of API 5L X80 steel. Material properties used in FEM analyses assume a rate-independent plasticity model using the von Mises constitutive model with isotropic hardening [8]. Values of Young modulus and Poisson's ratio used are, respectively, 200 GPa and 0.3.…”

Section: Methodsmentioning

confidence: 99%

“…automatic generation of models of pipelines with corrosion defects and automatic management of physical and geometric nonlinear analysis, respectively. The program and tools are described in various publications [1][2][3][4][5][6][7][8][9]. PIPEFLAW provides an interface easy to operate, reduction in the processing time of the analysis and accuracy and reliability for evaluating the integrity of corroded pipelines.…”

Section: Introductionmentioning

confidence: 99%

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Failure pressure prediction of corroded pipes under combined internal pressure and axial compressive force

Bruère

Bouchonneau

Motta

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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In this work, failure prediction of corroded pipelines under combined loads of internal pressure and axial compressive force is investigated through the Finite Element Method. The study was carried out using the PIPEFLAW program, which was specially developed to automatically generate and analyze corroded pipelines models. Two configurations of idealized defects in pipeline were investigated: with two and three rectangular defects. This work was divided into two stages where, on the first stage, the analysis is performed considering only internal pressure. On the second stage, combined loads are simulated considering internal pressure and axial compressive forces. Results show that failure pressure values decrease with the increase in the axial compressive force, for both Finite Elements models analyzed.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Failure pressure prediction of corroded pipes under combined internal pressure and axial compressive force

Bruère

Bouchonneau

Motta

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

Self Cite

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“…Hydrostatic burst tests are generally carried out on different metal wall loss defect geometries for assessing the structural integrity of these pipelines. Many researchers found a variation of theoretical prediction of burst pressure with respect to the different semi-empirical models even for the same defect area [11,[17][18][19][20][21][22]. Pipe material condition and empirical equation of remaining strength factor (defect geometry) are different in each model, which leads to a difference in theoretical burst pressure.…”

Section: Introductionmentioning

confidence: 99%

Prediction of the burst pressure for defective pipelines using different semi-empirical models

Budhe

Barros

2020

Frattura Ed Integrità Strutturale

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The main aim of this work is to predict the theoretical burst pressure of defective pipelines using different semi-empirical models and compare them with the hydrostatic test results. A new methodology was formulated with accounting for a minimum thickness (weakest section of the pipe) over the length of the pipe to predict the most conservative burst pressure. With a simple analytical expression, a reasonable accuracy and more conservative burst pressure can be obtained for any arbitrary defect shapes. A variation of burst pressure was found between theoretical prediction and hydrostatic burst test results with respect to the different semi-empirical models even for the same corroded defects. Different defect geometry shape and pipe material conditions are the possible causes for variation in the burst pressure between the semi-empirical models, so a careful selection of these parameters is necessary. The proposed methodology predicted a more conservative burst pressure for all arbitrary defects shapes and can predict reasonably accurate values if it accounts for the axial stress.

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“…Research into corrosion of concrete pipes focuses on the failure and reliability analysis of corroded concrete pipes. Renato et al [13] examined failure pressure of corroded pipelines using nonlinear FE analysis, and the results was validated by experimental burst tests and semi-empirical method. Xu et al [14] investigated the failure behavior of pipelines with interacting corrosion using a finite element method and proposed a solution to predict burst pressure using an artificial neural network.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on Mechanical Analysis of Buried Corroded Concrete Pipes under Static Traffic Loads

Fang

Yang

et al. 2019

Applied Sciences

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Concrete pipes are widely used in municipal drainage projects. Corrosion is a common issue affecting concrete pipes, causing leakage of pipes, environmental pollution, and road collapse. It is necessary to study the mechanical properties of corroded concrete pipes. To investigate in depth the influence of corrosion depths, corrosion widths, traffic loads, and cover depths, on mechanical characteristics of buried corroded concrete pipes under static traffic loads, a series of full-scale tests were carried out. Then, a three-dimensional finite element model of buried corroded concrete pipes under traffic loads is established based on ABAQUS. Results showed that the inside of the pipe wall is more vulnerable to damage than the outside. The stress and strain of a corroded pipe is significantly larger than that of an uncorroded pipeline. The corrosion has a great influence on the stress and strain of the corroded area. The maximum principal stress and circumferential strain at corroded area increase with increasing of corrosion depth. The stress and strain first increases rapidly (0–10°), and then decreases rapidly (10–45°), then finally decreases slowly (45–180°) with an increase of corrosion width. In addition, the greater cover depth or increasing traffic load causes a rapid increase in both circumferential strain and the maximum principal stress.

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Comparative studies for failure pressure prediction of corroded pipelines

Cited by 48 publications

References 9 publications

Failure pressure prediction of corroded pipes under combined internal pressure and axial compressive force

Failure pressure prediction of corroded pipes under combined internal pressure and axial compressive force

Prediction of the burst pressure for defective pipelines using different semi-empirical models

Experimental and Numerical Study on Mechanical Analysis of Buried Corroded Concrete Pipes under Static Traffic Loads

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