Failure Analysis of HDPE Pipe for Drinking Water Distribution and Transmission

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

doi:10.1007/978-3-319-17527-0_41

Cited by 4 publications

(6 citation statements)

References 10 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 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: 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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“…Numerous studies were focused on investigation of properties and crack causes in products made of HDPE, especially piping made of HDPE due to its wide use and application. To determine cause of failure of predict service lifetime standardized tests [11,12], custom experiments [13] or FEA numerical modeling [14][15][16] were applied. As the degree of crystallinity has significant influence on properties and performance of HDPE parts [2,9], determining the degree of crystallinity in the part can provide important information about properties and structure of the material.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Analytical Methods for the Failure Analysis of Injection Molded Part

Gajdoš

Slota

Kaščák

et al. 2020

Acta Metall Slovaca

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As the use of the thermoplastic materials becomes conventional in numerous parts and various applications, incidence of various types of failure becomes inevitable. Failure of injection molded parts can be a cause of economic and legal problems, as well as causing health damage or death. Public perception of plastics is adversely affected by their failures, such as the bad reputation that early plastics earned with toys that broke too easily. As the injection molding process is very complex, finding the cause of failure is very complicated. In industrial mass scale production, determining the cause of failure is key point in customer-supplier relationship. In the presented study, a type of injection molded product from HDPE affected by occurrence of cracks was investigated by mechanical, thermal testing and spectral analysis. Mechanical properties were evaluated by the uniaxial tensile test and the SHORE hardness test. Thermal properties of the samples were evaluated by DSC/TGA analysis and for the spectral analysis a Raman spectroscopy device was used. Obtained results provided information about fluctuating quality of used material, coupled with non/stable molding conditions and small molding window. All those aspects caused molded in stress, which was released in the form of crack during the installation.

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