HDPE pipes failure analysis and damage modeling

Farajian, Majid; Elghorba, Mohamed

doi:10.1016/j.engfailanal.2016.10.002

Cited by 48 publications

(24 citation statements)

References 18 publications

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“… In Fiber-Reinforced Composites, the failure occurs in terms of debonding of the fibre–matrix interface, matrix fracture, stress redistribution, fibre fracture, and fibre pullout. 2016 HDPE pipes failure analysis and damage modeling [ 134 ] Fatigue The fatigue requires three stages, initiation of microcrack, propagation, and rupture. Almost 50–90% of mechanical failures are due to fatigue.…”

Section: Table A1mentioning

confidence: 99%

Permeation Damage of Polymer Liner in Oil and Gas Pipelines: A Review

2020

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Non-metallic pipe (NMP) materials are used as an internal lining and standalone pipes in the oil and gas industry, constituting an emerging corrosion strategy. The NMP materials are inherently susceptible to gradual damage due to creep, fatigue, permeation, processing defects, and installation blunder. In the presence of acid gases (CO2, H2S), and hydrocarbons under high pressure and temperature, the main damage is due to permeation. The monitoring of possible damage due to permeation is not well defined, which leads to uncertainty in asset integrity management. Assessment of permeation damage is currently performed through mechanical, thermal, chemical, and structural properties, employing Tensile Test, Differential Scanning Calorimetry (DSC), Fourier-transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy (SEM)/Transmission Electron Microscopy (TEM), to evaluate the change in tensile strength, elongation, weight loss or gain, crystallinity, chemical properties, and molecular structure. Coupons are commonly used to analyze the degradation of polymers. They are point sensors and did not give real-time information. Polymers are dielectric materials, and this dielectric property can be studied using Impedance Analyzer and Dielectric Spectroscopy. This review presents a brief status report on the failure of polymer liners in pipelines due to the exposure of acid gases, hydrocarbons, and other contaminants. Permeation, liner failures, the importance of monitoring, and new exclusive (dielectric) property are briefly discussed. An inclusive perspective is provided, showing the challenges associated with the monitoring of the polymer liner material in the pipeline as it relates to the life-time prediction requirement.

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Section: Table A1mentioning

confidence: 99%

Permeation Damage of Polymer Liner in Oil and Gas Pipelines: A Review

2020

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“…Results considered that the pipes studied still have very good mechanical properties and maybe adequately safe to use by extrapolated remaining lifetime prediction. Burst pressures of HDPE pipes with R-type groove and without damage were tested systematically by Majid et al [17,18].…”

Section: Introductionmentioning

confidence: 99%

“…The modified unified damage model can be expressed as the pressure corresponding to the endurance limit of the undamaged material, MPa, P u = the ultimate pressure corresponding to the burst of the undamaged HDPE, MPa, P ur = the ultimate burst pressure for notched HDPE pipes, MPa. m = 1 for HDPE material.The modified unified damage model proposed byMajid et al can well predict the damage behavior of HDPE with R-type notch[17].…”

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confidence: 99%

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Burst Pressures of High-Density Polyethylene Pipes Considering the Notch Effect: Testing and Prediction

Zheng

Wang

Chen

2020

Journal of Testing and Evaluation

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：This work aims at testing and predicting burst pressures of HDPE pipes with various groove conditions. Four types of notches including U-type, V-type, L-Type (linear type) and R-type (rectangular type) with different depth ratios are discussed. A unified damage model is proposed to predict the damage behaviors of notched HDPE pipes for different notch shapes. Results indicate that the notch shape has an

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“…Polymers are used in diverse structural requests due to their technical advantages and lower costs compared to other materials. Nowadays, thermoplastic pipes are recommended for fluid transportation such as water, sewage and gas networks [1,2]. High density polyethylene (HDPE) is one of the widely utilized polymers in agriculture and industrial processes.…”

Section: Introductionmentioning

confidence: 99%

Reliability Index of Hdpe Pipe Basedon Fracture Toughness

Alimi¹,

Azzouz

Chaoui

et al. 2018

mech

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Nomenclature a is crack length (μm); β is reliability index; G(Xj) is the limit state function ; KI is stress intensity factor in mode I (MPa.√m); KIC is critical stress intensity factor (MPa.√m); p is operating pressure (MPa); Pf is probability of failure; P is probability operator; r is pipe radius (mm); SDR is standard dimension ratio; t is wall thickness (mm); Xj is random variables; Y is geometrical factor; σmax is stress max (MPa); σe is yield stress (MPa); Φ(-β) is cumulative Gaussian probability function.

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HDPE pipes failure analysis and damage modeling

Cited by 48 publications

References 18 publications

Permeation Damage of Polymer Liner in Oil and Gas Pipelines: A Review

Permeation Damage of Polymer Liner in Oil and Gas Pipelines: A Review

Burst Pressures of High-Density Polyethylene Pipes Considering the Notch Effect: Testing and Prediction

Reliability Index of Hdpe Pipe Basedon Fracture Toughness

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