Prediction of Failure Pressure for Defective Pipelines Reinforced with Composite System, Accounting for Pipe Extremities

Budhe, S.; Barros, Sílvio de

doi:10.1007/s11668-019-00782-z

Cited by 6 publications

(7 citation statements)

References 26 publications

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“…6 shows the predicted burst pressure with accounting the axial stress which gives more accurate results compared to without accounting axial stress. The predicted pressure with accounting axial stress in the analysis is validating the concept for accurate results suggested by many researchers [35][36][37]. The predicted burst pressure is 1.15 times higher when axial stress is accounted in the analysis.…”

Section: New Methodology For Prediction Of the Burst Pressuresupporting

confidence: 79%

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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Section: New Methodology For Prediction Of the Burst Pressuresupporting

confidence: 79%

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

Budhe

Barros

2020

Frattura Ed Integrità Strutturale

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“…14 shows the numerical and analytical failure pressure obtained in all three cases and it clearly shows that the results are closely matches. Pipe extremities condition, plastic behavior are the possible causes for the failure differences between experimental and analytical using ISO/TS24817 standard [37]. However, the failure pressure of repaired pipe obtained analytically (ISO/TS 24817) is lower as compared to the experimental failure pressure, but this will keep more margin and which ultimately safer but with the cost of more composite material and this urge to optimize the composite repair thickness for cost effective repair.…”

Section: Repaired Pipe With Composite Wrapmentioning

confidence: 99%

Numerical analysis of repaired wall loss defect pipelines for optimum composite wrap thickness

Khaise

Barros²,

Rohem

et al. 2022

Frattura Ed Integrità Strutturale

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The paper presents the numerical analysis of failure pressure of wall loss defect metallic pipelines and validate it with experimental results. An optimization of composite thickness for repair of wall loss defect pipeline is also carried out using numerical analysis. A nonlinear explicit FE code with constitutive models for metallic steel and composite material to failure modelling was used. Three different cases: non-defective pipe, wall loss defective pipe and composite repaired of defective pipe are considered. It was found that the numerical results are in good agreement with the analytical results in all the three cases. The theoretical failure pressure determined by ISO/TS 24817 standard for wall loss defect pipe is highly conservative compared to the numerical failure pressure for the given composite repair thickness. Additionally, the numerical study on optimization of repair thickness revealed that lower composite repair thickness can also sustain the designed failure pressure (composite repair thickness of 8.4 mm can sustain the same designed pressure instead of 16.1 mm thickness), which implies there is scope to further reduce the composite thickness, which ultimately reduce the repair cost.

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“…Procedure Resolution Differential equations that travel should check the circumferential and radial displacements multilayer composite tubular structures in order to meet the equilibrium of both internal and external efforts on each layer (k) are expressed by Eq 14 [1,2]: where the parameters are…”

Section: Irreversible Behaviormentioning

confidence: 99%

“…The static fatigue or creep failure is the tendency of materials to deform when subjected to long-term stress, particularly when exposed to heat, causing damage which may progress to failure in composite pressure vessels type III or IV and pipelines reinforced by composite system, in order to predict a failure pressure [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Deterministic Analysis for Creep Behavior of Damaged Composite Tubular Structure

Hocine

Maizia

Ghouaoula

et al. 2020

J Fail. Anal. and Preven.

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The aim of this paper is to study the effect of creep loading on damaged multilayered composite cylindrical structure, taking into account various damage rates by developing analytical model. The developed model is used to simulate the elasto-visco-plastic response of damage cylindrical composite structure under different types of loading such as tension and internal pressure with end effect. This model makes it possible to estimate the service life of the multilayed damaged structures subjected to a creep loading. The results obtained make and show that the presence of the damage within the multilayer structures causes a clear increase of the circumferential stress which is the only responsible of the ruin, where some results are compared with experimental testing from previous works and a good correlation is obtained.

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Prediction of Failure Pressure for Defective Pipelines Reinforced with Composite System, Accounting for Pipe Extremities

Cited by 6 publications

References 26 publications

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

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

Numerical analysis of repaired wall loss defect pipelines for optimum composite wrap thickness

Deterministic Analysis for Creep Behavior of Damaged Composite Tubular Structure

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