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Mechanical properties of electro and butt fusion welded high-density polyethylene pipes

  • Soran Saleem Alkaki and Mete Onur Kaman
Published/Copyright: March 26, 2019
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Abstract

Electrofusion welding and butt fusion welding are common methods for joining polyethylene pipes used for water and gas distribution. Because of the wide use of these two methods in infrastructure engineering, welded pipe joints and pipe materials should be examined with the intent of reducing errors in projects. The purpose of this study is to increase knowledge of electrofusion and butt fusion welding methods and examine them in order to establish which offers the best performance for a specific engineering service project. Tensile and hydrostatic pressure tests are performed on un-welded and welded pipes for high-density polyethylene pipes. Additionally, a numerical analysis of the experimental results is conducted by employing the ANSYS program for tensile test samples. In tensile tests, according to the maximum average load, electrofusion welding values are larger than those of butt fusion welding and the elongations of the un-welded pipe at the fracture in butt fusion welding are greater than in electrofusion welding. For short-term hydrostatic pressure tests, the resistance in butt fusion welding for defects of roundness and alignment is better than that of electrofusion welding.


*Correspondence Address, Assoc. Prof. Dr. Mete Onur Kaman, Department of Mechanical Engineering, Engineering Faculty, Firat University, 23200 Elazig, Turkey, E-mail:

Soran Saleem Alkaki was born in 1985. He received his BSc degree at the Technical Engineering College, Sulaymaniyah Polytechnic University, Iran, in 2008. He received his MSc degree in the Department of Mechanical Engineering, Firat University, Elazig, Turkey in 2016. He worked as water network project supervisor and water director in water treatment plant-projects, planning, water quality control, maintenance and repair departments in Kalar, Iran. He is currently Director of the Kalar District Water Directorate, Iran.

Associate Prof. Dr. Mete Onur Kaman was born in 1975. He received his BSc and MSc degrees in the Department of Mechanical Engineering, Firat University, Elazig, Turkey in 1999 and 2000, respectively. He received his PhD degree in the Department of Engineering Science, Middle East Technical University, Ankara, Turkey in 2006. He is currently Associate Professor in the Department of Mechanical Engineering, Firat University, Elazig, Turkey. His research interests include solids and facture mechanics, fiber reinforced composites and failure analysis.


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Published Online: 2019-03-26
Published in Print: 2019-04-04

© 2019, Carl Hanser Verlag, München

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