Structural integrity analysis of HDPE pipes for water supplying network
In: ISSN: 8756-758X, 2019
Online
academicJournal
Zugriff:
International audience ; 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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Structural integrity analysis of HDPE pipes for water supplying network
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Autor/in / Beteiligte Person: | Bouaziz, Mohamed Ali ; Guidara, Mohamed Amine ; Schmitt, Christian ; Hadj-Taïeb, Ezzeddine ; Azari, Zitouni ; Dmytrakh, Ihor ; Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3) ; Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies ; HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM) ; École Nationale d'Ingénieurs de Sfax ; Karpenko Physico-Mechanical Lviv ; National Academy of Sciences of Ukraine = Національна академія наук України = Académie nationale des sciences d'Ukraine (NASU / НАН України) |
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Zeitschrift: | ISSN: 8756-758X, 2019 |
Veröffentlichung: | HAL CCSD ; Wiley-Blackwell, 2019 |
Medientyp: | academicJournal |
DOI: | 10.1111/ffe.12951 |
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