To establish a comprehensive classification method of the defects in fusion joints of polyethylene (PE) pipes, the geometrical characters of typical defects in electrofusion (EF) and butt fusion (BF) joints were researched by means of ultrasonic phased array inspection and naked-eye observation. Then the results were comparatively analyzed, and a novel classification method of the defects in PE pipe joints was proposed. Typical defects in EF joints were classified as lack of fusion, voids, wire dislocation, and cold welding. And those in BF joints were classified as crack, voids, inclusion on fusion interface, and process defects. Furthermore, characteristics of the classified defects, together with their main causes were briefly described.
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ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference
July 18–22, 2010
Bellevue, Washington, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-4920-0
PROCEEDINGS PAPER
Classification of Defects in Fusion Joints of Polyethylene Pipes
Jinyang Zheng,
Jinyang Zheng
Zhejiang University, Hangzhou, China
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Yongquan Qin,
Yongquan Qin
Zhejiang University, Hangzhou, China
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Jianfeng Shi,
Jianfeng Shi
Zhejiang University, Hangzhou, China
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Weican Guo,
Weican Guo
Zhejiang University; Zhejiang Special Equipment Inspection & Research Institute, Hangzhou, China
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Fei Wang
Fei Wang
Zhejiang University, Hangzhou, China
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Jinyang Zheng
Zhejiang University, Hangzhou, China
Yongquan Qin
Zhejiang University, Hangzhou, China
Jianfeng Shi
Zhejiang University, Hangzhou, China
Weican Guo
Zhejiang University; Zhejiang Special Equipment Inspection & Research Institute, Hangzhou, China
Hui Wang
Zhejiang University, Hangzhou, China
Fei Wang
Zhejiang University, Hangzhou, China
Paper No:
PVP2010-25576, pp. 713-720; 8 pages
Published Online:
January 10, 2011
Citation
Zheng, J, Qin, Y, Shi, J, Guo, W, Wang, H, & Wang, F. "Classification of Defects in Fusion Joints of Polyethylene Pipes." Proceedings of the ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASME 2010 Pressure Vessels and Piping Conference: Volume 1. Bellevue, Washington, USA. July 18–22, 2010. pp. 713-720. ASME. https://doi.org/10.1115/PVP2010-25576
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