HDPE Pipe Failure Analysis Under Overpressure in Presence of Defect

Guidara, Mohamed Amine; Bouaziz, Mohamed; Dallali, Manel; Schmitt, Christian; Taïeb, Ezzeddine Haj; Azari, Z.

doi:10.1007/978-3-319-66697-6_101

Cited by 4 publications

(7 citation statements)

References 8 publications

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“…Stress‐strain curves for high‐density polyethylene (HDPE) [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Numerical Model Based On Finite Element Methodsmentioning

confidence: 99%

“…The mechanical behaviour of the HDPE PE100 pipe was defined in the model by introducing the stress‐strain curves for different strain rates (Figure ). These data were received from the uniaxial loading tests of the experimental study published previously …”

Section: Numerical Model Based On Finite Element Methodsmentioning

confidence: 99%

“…To verify that the material behaviour has been correctly applied to the model, burst tests were reproduced numerically and experimentally under the same conditions (loading, geometry, boundary conditions). One of the tested specimens was instrumented with rosettes in the vicinity of notch.…”

Section: Numerical Model Based On Finite Element Methodsmentioning

confidence: 99%

“…The pipe wall is strongly deformed near the defect. Furthermore, knowing that the size of the rosette is 10.7×11.9 mm, a low positioning error can disturb measurements of circumferential strain …”

Section: Numerical Model Based On Finite Element Methodsmentioning

confidence: 99%

“…The average overpressure drop in the network is 43.38%, which points out the effectiveness of HDPE pipes in damping shock waves. These results showed the advantages of HDPE pipes in comparison with other materials such as cast iron that is used for the water supply network.…”

Section: Real Application: South Tunisian Water Supply Networkmentioning

confidence: 99%

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Structural integrity analysis of HDPE pipes for water supplying network

Bouaziz

Guidara

Schmitt

et al. 2018

Fatigue Fract Eng Mat Struct

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A problem of reliability of polymer pipes manufactured with the high‐density polyethylene (HDPE) for drinking water supply was considered. The safety of the pipelines network was analyzed with taking into account two main factors: arising of sudden overpressure (water hammer phenomenon) and presence of defects on pipe surface. Based on elastoplastic fracture mechanics and using of J‐integral approach, the numerical model of cracked pipe was developed and verified by direct experimental test. The formula for calculation of crack initiation pressure, which is the function of pipe size and size of external surface defect, was derived. The validity of this relation was proved for pipes of diameter 450 to 800 mm. It was also shown that the pressure peaks of the water hammer phenomenon are quickly damped because of the high deformability of the polyethylene pipes and the defect depth that is equivalent to 40% of pipe wall thickness can be considered as acceptable. The applicability of developed tools was demonstrated under analysis in the real state of South Tunisian water supply network.

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“…Stress‐strain curves for high‐density polyethylene (HDPE) [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Numerical Model Based On Finite Element Methodsmentioning

confidence: 99%

Section: Numerical Model Based On Finite Element Methodsmentioning

confidence: 99%

Section: Numerical Model Based On Finite Element Methodsmentioning

confidence: 99%

Section: Numerical Model Based On Finite Element Methodsmentioning

confidence: 99%

Section: Real Application: South Tunisian Water Supply Networkmentioning

confidence: 99%

See 3 more Smart Citations

Structural integrity analysis of HDPE pipes for water supplying network

Bouaziz

Guidara

Schmitt

et al. 2018

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

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Experimental study and finite element analysis of notch effect on HDPE pipes’ resistance under internal pressure

Abdelwahab¹,

Abdelkader²,

Abderazek³

et al. 2022

Preprint

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This work aims to study the notch effect in HDPE pipes. Burst tests were performed on notched pipes of HDPE for different depth ratios a/t to evaluate the burst pressure equivalent to each notch depth. 3D finite elements calculations were performed in the frame of elastic-plastic behavior, to predict the Von-Mises equivalent stress values at different positions of notch vicinity. Critical values of Von-Mises equivalent stress were predicted for different notch shapes and depths, also for different hydrostatic pressure levels. According to the obtained results, burst pressure value depends strongly on the notch depth. Hence, equivalent stress takes its maximum values in the immediate vicinity of the notch and then, gradually decreases through the outer pipes limit.

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Investigation of the Notch Impact on the Internal Pressure Resistance of HDPE Pipes: An Experimental and FEA Study.

Abdelwahab,

Abdelkader,

Abderazek

et al. 2024

Preprint

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This study investigates the impact of notches on HDPE pipes, employing burst tests on notched HDPE pipes with varying depth ratios (a/t). The objective is to assess the burst pressure corresponding to each notch depth. Utilizing 3D finite element analyses within the context of elastic-plastic behavior, Von-Mises equivalent stress values are predicted at various positions near the notch. Critical Von-Mises equivalent stress values are anticipated for different notch shapes, depths, and hydrostatic pressure levels. The results reveal a substantial dependence of burst pressure on the notch depth, with equivalent stress reaching maximum values in the immediate vicinity of the notch and gradually diminishing towards the outer limits of the pipes.

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HDPE Pipe Failure Analysis Under Overpressure in Presence of Defect

Cited by 4 publications

References 8 publications

Structural integrity analysis of HDPE pipes for water supplying network

Structural integrity analysis of HDPE pipes for water supplying network

Experimental study and finite element analysis of notch effect on HDPE pipes’ resistance under internal pressure

Investigation of the Notch Impact on the Internal Pressure Resistance of HDPE Pipes: An Experimental and FEA Study.

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