Investigation on the hot melting temperature field simulation of HDPE water supply pipeline in gymnasium pool

Cai, Zhiqiang; Dai, Hongzhe; Fu, Xibin

doi:10.1016/j.rinp.2018.04.019

Cited by 12 publications

(4 citation statements)

References 5 publications

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Section: Results and Interpretationsmentioning

confidence: 99%

“…Specifically, this depth is derived from the temperature profiles at the end of the heating duration, wherein the distance X fusion is determined. X fusion represents the point at which the temperature reaches the melting threshold of 130 C. 23 The outcomes of processing various test temperature profiles are summarized in Table 8. It is noteworthy that the thickness of the melted zone increases with the increase in different parameters such as temperature, heating duration, and welding force.…”

Section: Melting Depth Modelingmentioning

confidence: 99%

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An experimental‐based thermal prediction model for butt fusion welding of polymer pipes

Awadi,

Zidi,

Ben Chiekh

2024

Polymer Engineering & Sci

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High‐density polyethylene (HDPE) is one of the most used thermoplastic materials for piping applications, due to its significant advantages. The butt‐fusion process is the most used joining processes for HDPE welding. During the process, the behavior of the material changes. This behavioral change depends on the applied welding process and on the used parameters. Thermal analysis can be used as a tool to reveal and evaluate the modifications of the physical and mechanical properties. In this study, an experimental program was applied to HDPE to assess the effects of different parameters on the welding process including heating temperature, heating duration and the applied strength. Tests are performed according to a full factorial design of experiment (DOE). Mathematical models derived from experimental data are used to establish relationships between the input parameters, such as force and heating duration and the corresponding outputs such as temperature distribution during the different welding phases and the thickness of the molten polymer. The empirical models can be used to implement a control strategy for the temperature and hence quantify the thickness of the molten zone to improve the quality of the weld joint by selecting the appropriate welding conditions for the molten zone.Highlights High‐density polyethylene piping butt‐fusion joint examination using Infrared imaging. Spatial–temporal distribution of temperature for different phases of the welding process. Mathematical Regression techniques are performed. Thickness of molten polymer is assessed. Results are useful for saving material and improvement of the process.

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Section: Results and Interpretationsmentioning

confidence: 99%

Section: Melting Depth Modelingmentioning

confidence: 99%

An experimental‐based thermal prediction model for butt fusion welding of polymer pipes

Awadi,

Zidi,

Ben Chiekh

2024

Polymer Engineering & Sci

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“…High-density polyethylene (HDPE) pipes are extensively utilized for water transportation in municipal engineering and are increasingly being adopted in nuclear power plants [1,2]. In comparison to conventional metal pipes, HDPE pipes offer numerous advantages including exceptional wear resistance, corrosion resistance, reliable connections, high toughness, scratch resistance, excellent crack-arresting performance, and prolonged service life [3].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Creep Behavior of HDPE Pipe Butt Fusion Welded Joints Using a Stepped Isostress Method

Bai,

Lin,

Lai

2024

Polymers

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The utilization of high-density polyethylene (HDPE) pipes is prevalent in water transportation due to their exceptional durability, resistance to corrosion, and ease of installation. Traditionally, butt fusion welding has been employed to connect HDPE pipes. In this study, scanning electron microscopy (SEM) was utilized to examine the microstructure of butt fusion welded joints of HDPE pipes, while the stepped isostress method (SSM) was employed to investigate their creep behavior at 100 °C in ambient air. SEM results revealed a significant presence of craze or lamellae in the base material, whereas minimal occurrences of craze or lamellae were observed in the melt zone. The results obtained from the SSM indicated that the creep life of butt fusion welded joints of HDPE pipes was not adversely affected by the welding bead, and their creep life was no less than that of the base material when ductile creep failure occurred.

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“…The quality of butt-fusion welded joints depends largely on the material properties and the joining procedures, so that the pipe joints usually are not perfect due to some problems including low-order properties, very high melt flow, contamination of the welding surfaces, and so on. Exerting the internal pressure, these deficiencies can cause crack initiation and subsequently crack propagation and failure (Cai et al, 2018; Khatri et al, 2015; Zakar and Budinski, 2017). To avoid these irreparable damages, there should be some efficacious ways to confine and reinforce the butt-fusion welded joints in HDPE pipes (Choi et al, 2018; Tariq et al, 2011; Zhao et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Analytical and experimental study of shape memory alloy reinforcement on the performance of butt-fusion welded joints in high-density polyethylene pipe

Choi

Ostadrahimi

Youn

2020

Journal of Intelligent Material Systems and Structures

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In this article, a shape memory alloy wire is employed as confinement to enhance the flexural rigidity of the butt-fusion welded joints in the high-density polyethylene pipes. To this end, analytical and experimental studies are considered, when the shape memory alloy wire is wrapped around a butt-fusion joint and an internal pressure is applied to the high-density polyethylene pipe. To investigate the efficiency of shape memory alloy wire jacket on the performance of butt-fusion welded joint in high-density polyethylene pipe, two cases of perfect butt-fusion joint and imperfect butt-fusion joint are tested. The influence of the number of shape memory alloy wire jacket on the high-density polyethylene pipe joints as well as the effect of different flexural rigidities of the wire and high-density polyethylene pipe, and different diameters are evaluated. The deformation is measured using linear voltage displacement transducer and digital image correlation analysis at different location of the pipe length. In addition, radial strain of the pipes due to bulging is measured by electronic resistance strain gauges. Results show that the shape memory alloy wire jacket has a significant effect (33%) on enhancing imperfect butt-fusion welded joint of high-density polyethylene pipes.

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Investigation on the hot melting temperature field simulation of HDPE water supply pipeline in gymnasium pool

Cited by 12 publications

References 5 publications

An experimental‐based thermal prediction model for butt fusion welding of polymer pipes

An experimental‐based thermal prediction model for butt fusion welding of polymer pipes

Investigation of Creep Behavior of HDPE Pipe Butt Fusion Welded Joints Using a Stepped Isostress Method

Analytical and experimental study of shape memory alloy reinforcement on the performance of butt-fusion welded joints in high-density polyethylene pipe

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