Study of the Tensile Strength and Shore Hardness Behavior of PE100 SDR11 Electrofusion Welded and Artificially aged Pipes
Received: 9 April 2024 | Accepted: 24 April 2024 | Online: 28 April 2024
Corresponding author: Dragos Valentin Iacob
Abstract
This paper presents the tensile strength and Shore D hardness behavior of electrofusion-welded and artificially aged polyethylene (PE) pipes of the PE100 SDR11 classification with a nominal diameter of 125 mm and a wall thickness of 11.40 mm. For the study, 12 samples were taken from the body of a PE100 SDR11 pipe (9 of which were obtained from the fusion-welded joint). Subsequently, the 12 samples were divided into 3 groups of 4 pieces (1 unwelded sample and 3 welded samples). Following the Arrhenius method, the samples of the 2 groups (group II and group III) were artificially aged, those belonging to group II were aged 10 for years and those belonging to group III were aged for 20 years. Subsequently, all 12 samples were tested for tensile strength and Shore D hardness. The 10-year aging of the welded samples increased the tensile strength by 12.31% and the 20-year artificial aging increased the tensile strength by 18.44%. For the unwelded samples, artificial aging for 10 years increased the tensile strength by 11.12%, whereas aging for 20 years increased the tensile strength by 12.63%. Artificial aging of the PE100 SDR 11 pipes does not have a significant influence on the Shore D hardness, which was found within the high range of hardnesses. The results show that the PE100 SDR pipes welded by electrofusion can be used for 20 years with safety.
Keywords:
polyethylene, electrofusion welding, tensile strength, artificial aging, shore hardnessDownloads
References
M. Minescu and D. G. Zisopol, Sudarea țevilor şi fitingurilor din polietilenă de înaltă densitate (HDPE Pipe & Fittings Welding). Ploiesti, Romania: UPG Ploieşti Publishing House, 2021.
D. G. Zisopol, A. I. Portoaca, I. Nae, and I. Ramadan, "A Comparative Analysis of the Mechanical Properties of Annealed PLA," Engineering, Technology & Applied Science Research, vol. 12, no. 4, pp. 8978–8981, Aug. 2022.
D. G. Zisopol, I. Nae, A. I. Portoaca, and I. Ramadan, "A Theoretical and Experimental Research on the Influence of FDM Parameters on Tensile Strength and Hardness of Parts Made of Polylactic Acid," Engineering, Technology & Applied Science Research, vol. 11, no. 4, pp. 7458–7463, Aug. 2021.
D. G. Zisopol, M. Minescu, and D. V. Iacob, "A Study on the Influence of FDM Parameters on the Tensile Behavior of Samples made of PET-G," Engineering, Technology & Applied Science Research, vol. 14, no. 2, pp. 13487–13492, Apr. 2024.
D. G. Zisopol, M. Minescu, and D. V. Iacob, "A Study on the Evaluation of the Compression Behavior of PLA Lattice Structures Manufactured by FDM," Engineering, Technology & Applied Science Research, vol. 13, no. 5, pp. 11801–11806, Oct. 2023.
D. G. Zisopol, M. Minescu, and D. V. Iacob, "A Theoretical-Experimental Study on the Influence of FDM Parameters on the Dimensions of Cylindrical Spur Gears Made of PLA," Engineering, Technology & Applied Science Research, vol. 13, no. 2, pp. 10471–10477, Apr. 2023.
D. G. Zisopol, D. V. Iacob, and A. I. Portoaca, "A Theoretical-Experimental Study of the Influence of FDM Parameters on PLA Spur Gear Stiffness," Engineering, Technology & Applied Science Research, vol. 12, no. 5, pp. 9329–9335, Oct. 2022.
M. Amjadi and A. Fatemi, "Tensile Behavior of High-Density Polyethylene Including the Effects of Processing Technique, Thickness, Temperature, and Strain Rate," Polymers, vol. 12, no. 9, Sep. 2020, Art. No. 1857.
B. Zhao, S. Zhang, C. Sun, J. Guo, Y. X. Yu, and T. Xu, "Aging behaviour and properties evaluation of high-density polyethylene (HDPE) in heating-oxygen environment," IOP Conference Series: Materials Science and Engineering, vol. 369, no. 1, May 2018, Art. No. 012021.
M. Stan and D. G. Zisopol, "Modeling and Optimization of Piston Pumps for Drilling," Engineering, Technology & Applied Science Research, vol. 13, no. 2, pp. 10505–10510, Apr. 2023.
D. G. Zisopol, M. Tănase, and A. I. Portoacă, "Innovative Strategies for Technical-Economical Optimization of FDM Production," Polymers, vol. 15, no. 18, Jan. 2023, Art. No. 3787.
O.-L. Petraşcu and A.-M. Pascu, "Comparative study of polyamide 6 (PA6) and polyamide 6 reinforced with 30% of glass fiber (PA6GF30)," Materials Today: Proceedings, vol. 93, pp. 625–629, Jan. 2023.
N. Rosca et al., "Minimizing the Main Strains and Thickness Reduction in the Single Point Incremental Forming Process of Polyamide and High-Density Polyethylene Sheets," Materials, vol. 16, no. 4, Jan. 2023, Art. No. 1644.
E. Avrigean, "Studies and Research on the Behavior of Polyethylene when Electrofusion Welding Fittings to High Density Polyethylene Pipes," Materiale Plastice, vol. 58, no. 1, pp. 85–98, Apr. 2021.
N. Stefanoaea, D.-M. Rusu, and A.-M. Pascu, "A Simulation Method for the One-time Snap-fit Assembly Process of PA6 GF60 - Components," Engineering, Technology & Applied Science Research, vol. 14, no. 1, pp. 12988–12992, Feb. 2024.
D. G. Zisopol and M.-J. Săvulescu, Bazele tehnologiei. Ploiesti, Romania: UPG Ploieşti Publishing House, 2003.
D. G. Zisopol, Tehnologii industriale și de construcții. Aplicații practice și studii de caz (Industrial and Construction Technologies. Practical Applications and Case Studies). Ploiesti, Romania: UPG Ploieşti Publishing House, 2003.
M. J. Savulescu, D. G. Zisopol, and I. Nae, Bazele tehnologiei materialelor. Îndrumar de lucrări practice. Ploiesti, Romania: Editura Premier Ploiești, 1997.
D. G. Zisopol, A. Dumitrescu, M. Minescu, and A. Dinita, "New materials intended for use within natural gas installations and quality testing procedures," Journal of Engineering Sciences and Innovation, vol. 7, no. 2, pp. 241–252, Jun. 2022.
M. Săvulescu and D. G. Zisopol, Tehnologii industriale şi de construcţii. Ploiesti, Romania: UPG Ploieşti Publishing House, 2002.
D. G. Zisopol, Ingineria valorii (Value Engineering). Ploiesti, Romania: UPG Ploieşti Publishing House, 2004.
S.-M. Filip, E. Avrigean, and A.-M. Pascu, "Damage to Natural Gas Distribution Steel Pipelines Caused by Rigid Bodies Resulting From the Excavation of Laying Trenches," Engineering, Technology & Applied Science Research, vol. 14, no. 1, pp. 12984–12987, Feb. 2024.
Y.-C. Chen, Y.-F. Li, Y. Xi, Q. Li, Q. Lu, and J. Yang, "Natural aging mechanism of buried polyethylene pipelines during long-term service," Petroleum Science, vol. 20, no. 5, pp. 3143–3156, Oct. 2023.
D. G. Zisopol and A. Dumitrescu, Materiale şi tehnologii primare. Aplicații practice și studii de caz (Materials and Primary Technologies. Practical Applications and Case Studies). Ploiesti, Romania: UPG Ploieşti Publishing House, 2005.
D. G. Zisopol and A. Dumitrescu, Ecotehnologie: studii de caz. Ploiesti, Romania: UPG Ploieşti Publishing House, 2020.
D. G. Zisopol, A. Dumitrescu, and T. Ciprian, Ecotehnologie. Noțiuni teoretice, aplicații practice şi studii de caz. Ploiesti, Romania: UPG Ploieşti Publishing House, 2010.
D. G. Zisopol, M. Minescu, and D. V. Iacob, "A Study on the Influence of aging of the Butt-welded PE100 SDR11 on Shore A Hardness and Tensile Strength," Engineering, Technology & Applied Science Research, vol. 14, no. 1, pp. 12722–12727, Feb. 2024.
"ISO 527-2:2012. Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and extrusion plastics," https://www.iso.org/standard/56046.html.
"ISO 868:2003. Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore hardness)," https://www.iso.org/standard/34804.html.
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Copyright (c) 2024 Dragos Gabriel Zisopol, Mihail Minescu, Dragos Valentin Iacob, Nicoleta Voicu
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