Skip to main content

2015 | OriginalPaper | Buchkapitel

26. Fatigue Failure of Polyethylene Electrofusion Joints Subject to Contamination

verfasst von : Pedrom Tayefi, Stephen. B. M. Beck, Rachel A. Tomlinson

Erschienen in: Fracture, Fatigue, Failure, and Damage Evolution, Volume 5

Verlag: Springer International Publishing

Aktivieren Sie unsere intelligente Suche um passende Fachinhalte oder Patente zu finden.

search-config
loading …

Abstract

In the UK, water companies renew their aging water network using novel techniques and robust materials. The most common type of material used for network rehabilitation is Polyethylene (PE) pipe. A common method of jointing PE pipe is electrofusion welding. Here, electricity is used to heat a coil that melts the fitting and the host pipe of the same material. When the joint cools it forms a bond. However, premature failure of these can occur if best practice installation principles are not followed on site.
A novel experimental rig, designed to be retrofitted to an existing servo-hydraulic fatigue testing machine, has been used to cyclically pressurise PE fittings that have been created with a controlled element of ‘poor workmanship’. Extensive fatigue tests have shown the relationship between joint failure and the dynamic pressures experienced in water distribution systems. Furthermore, the effects of poor workmanship have shown to have a detrimental effect on asset integrity.
A post-failure analysis of the fittings using non-destructive ultra-sonic methods has shown the failure paths of the fittings. Additionally, a bespoke ultra-sonic rig was designed and built to monitor the crack propagation of the fittings during live dynamic tests to confirm the mode of failure.

Sie haben noch keine Lizenz? Dann Informieren Sie sich jetzt über unsere Produkte:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

Literatur
1.
Zurück zum Zitat O'Connor C (2012) The nature of polyethylene pipe failure, Pipeline Gas Journal 239 (12) O'Connor C (2012) The nature of polyethylene pipe failure, Pipeline Gas Journal 239 (12)
2.
Zurück zum Zitat UKWIR (1997) Plasitc pipeline systems—analysis of system failures. UK Water Industry Research Limited, London UKWIR (1997) Plasitc pipeline systems—analysis of system failures. UK Water Industry Research Limited, London
3.
Zurück zum Zitat UKWIR (2011) Leakage in PE pipe systems. UK Water Industry research Limited, London UKWIR (2011) Leakage in PE pipe systems. UK Water Industry research Limited, London
4.
Zurück zum Zitat WIS 4-32-08 (2002) Specification for the fusion jointing of polyethylene pressure pipeline systems using PE80 and PE100 materials. WRc PLC, Swindon WIS 4-32-08 (2002) Specification for the fusion jointing of polyethylene pressure pipeline systems using PE80 and PE100 materials. WRc PLC, Swindon
5.
Zurück zum Zitat Trew J, Mills D (2011) National sewers and water mains failure database. Cast study no. 1: Polyethylene pipe failures on water mains. WRc PLC for UK Water Industry Research Limited, Swindon Trew J, Mills D (2011) National sewers and water mains failure database. Cast study no. 1: Polyethylene pipe failures on water mains. WRc PLC for UK Water Industry Research Limited, Swindon
6.
Zurück zum Zitat UKWIR (1996) Pipeline innovation final report. UK Water Industry Research Ltd, London UKWIR (1996) Pipeline innovation final report. UK Water Industry Research Ltd, London
7.
Zurück zum Zitat UKWIR (1997) Plastic pipeline systems—pipeline innovation. UK Water Industry Research Ltd, London UKWIR (1997) Plastic pipeline systems—pipeline innovation. UK Water Industry Research Ltd, London
8.
Zurück zum Zitat Wylie EB, Streeter VL, Suo L (1993) Fluid transients in systems. Prentice Hall, Englewood Cliffs Wylie EB, Streeter VL, Suo L (1993) Fluid transients in systems. Prentice Hall, Englewood Cliffs
9.
Zurück zum Zitat Beech SH, Headford A, Hunt S, Sandilands G (1995) The resistance of polyethylene water pipeline systems to surge pressure. In: Plastic pipes IX, Edinburgh Beech SH, Headford A, Hunt S, Sandilands G (1995) The resistance of polyethylene water pipeline systems to surge pressure. In: Plastic pipes IX, Edinburgh
10.
Zurück zum Zitat Hertzberg RW, Manson JA (1980) Fatigue of engineering plastics. Academic, London Hertzberg RW, Manson JA (1980) Fatigue of engineering plastics. Academic, London
11.
Zurück zum Zitat Bowman J (1990) The fatigue response for polyvinyl chloride and polyethylene pipe systems. In: ASTM special technical publication issue, no. 1093, pp 101–121 Bowman J (1990) The fatigue response for polyvinyl chloride and polyethylene pipe systems. In: ASTM special technical publication issue, no. 1093, pp 101–121
12.
Zurück zum Zitat Tayefi P, Beck S, Tomlinson R (2014) The fatigue performance of electrofusion tapping tees subject to contamination, Int. J. Pressure Vessels and Piping (under review) Tayefi P, Beck S, Tomlinson R (2014) The fatigue performance of electrofusion tapping tees subject to contamination, Int. J. Pressure Vessels and Piping (under review)
13.
Zurück zum Zitat ISO 13955 (1997) Plastic pipes and fittings—crushing decohesion test for polyethylene (PE) electrofusion assemblies. International Organisation for Standardization, London ISO 13955 (1997) Plastic pipes and fittings—crushing decohesion test for polyethylene (PE) electrofusion assemblies. International Organisation for Standardization, London
Metadaten
Titel
Fatigue Failure of Polyethylene Electrofusion Joints Subject to Contamination
verfasst von
Pedrom Tayefi
Stephen. B. M. Beck
Rachel A. Tomlinson
Copyright-Jahr
2015
DOI
https://doi.org/10.1007/978-3-319-06977-7_26

    Marktübersichten

    Die im Laufe eines Jahres in der „adhäsion“ veröffentlichten Marktübersichten helfen Anwendern verschiedenster Branchen, sich einen gezielten Überblick über Lieferantenangebote zu verschaffen.