Abstract
Electrofusion welding (EFW) is a widely used technique for joining polyethylene pipes in the oil, gas and water industry. Like many welding and joining methods, the joints created by EFW can exhibit a range of flaw types that can be attributed to process variables such as: poor preparation of the parent material, contamination of the weld surfaces prior to welding and operator and/or equipment failure during the welding process. This paper describes ultrasonic testing using 128-channel linear array with a DYNARAY system to acquire data from a range of joints created using EFW. The samples were created in the laboratory with a range of defects that represent those commonly observed in the field. The samples were subsequently destructively tested using tensile testing of the coupling-pipe interface. Good corroboration was achieved between the observed weld quality from the ultrasonic data and the weld strength determined by the destructive testing.
Original language | English |
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Title of host publication | Proceedings of BINDT 2012 |
Place of Publication | Red Hook |
Number of pages | 10 |
Publication status | Published - 4 Sep 2012 |
Event | BINDT 51st Annual Conference - Northampton, Daventry, United Kingdom Duration: 4 Sep 2012 → 6 Sep 2012 |
Conference
Conference | BINDT 51st Annual Conference |
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Country/Territory | United Kingdom |
City | Daventry |
Period | 4/09/12 → 6/09/12 |
Keywords
- electrofusion welding
- polyethylene pipes
- flaw types
- joints
- ultrasonic testing
- tensile testing
- coupling-pipe interface