Structural integrity assessment of defected high density poly-ethylene pipe: Burst test and finite element analysis based on J-integral criterion

Guidara, Mohamed Amine; Bouaziz, Mohamed; Schmitt, Christian; Capelle, J.; Taïeb, Ezzeddine Haj; Azari, Z.; Hariri, S.

doi:10.1016/j.engfailanal.2015.07.042

Cited by 25 publications

(15 citation statements)

References 23 publications

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“…The crack initiation pressure values calculated by the Equation were compared with experimental values of burst pressure received for the pipes HDPE PE100 with longitudinal surface defects of different sizes . These experimental tests were also reproduced numerically by using the FEM model with the aim to calculate the crack initiation pressure at the same test conditions (pipe size, size and position of the defect, loading speed, boundary conditions, etc.…”

Section: Semiempirical Modelmentioning

confidence: 80%

“…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%

“…Although HDPE is a material with viscoelastic plastic behaviour, the elastoplastic fracture mechanics was explored by using the J‐integral approach and the experimental crack growth resistance curve ( J − Δ a ) of HDPE . It was also taken into account that the critical value of the J integral can be defined as the value of J when the crack initiation occurs …”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

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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Section: Semiempirical Modelmentioning

confidence: 80%

“…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%