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Analysis of a HDPE flanged connection with a time and temperature dependent constitutive behavior

A. Shahin, I. Barsoum, Feras Korkees Orcid Logo

International Journal of Pressure Vessels and Piping, Volume: 191, Start page: 104375

Swansea University Author: Feras Korkees Orcid Logo

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DOI (Published version): 10.1016/j.ijpvp.2021.104375

Abstract

High density polyethylene (HDPE) piping systems are used extensively in both industrial and societal infrastructure. However, their performance is sometimes impacted due to leakage through flanges, especially HDPE pipes with large diameters. Many factors affect leakage, including stress relaxation i...

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Published in: International Journal of Pressure Vessels and Piping
ISSN: 0308-0161
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56458
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spelling 2021-04-19T16:29:45.1626152 v2 56458 2021-03-18 Analysis of a HDPE flanged connection with a time and temperature dependent constitutive behavior 4d34f40e38537261da3ad49a0dd2be09 0000-0002-5131-6027 Feras Korkees Feras Korkees true false 2021-03-18 MTLS High density polyethylene (HDPE) piping systems are used extensively in both industrial and societal infrastructure. However, their performance is sometimes impacted due to leakage through flanges, especially HDPE pipes with large diameters. Many factors affect leakage, including stress relaxation in the HDPE material and ambient temperature effects. Hence, this study investigates the effect of temperature on the leakage of a HDPE flanged connection with steel backing rings. It incorporates the effects of stress relaxation and temperature on the HDPE material and assesses the degradation of performance of the connection with time by means of finite element analysis (FEA). The temperature and time dependent mechanical properties of the HDPE material are determined experimentally through tensile, compression and relaxation testing conducted at various temperatures under isothermal conditions. The constitutive behavior of the HDPE material is modeled using the nonlinear visco-elastic plastic three network model (TNM), which predicts the mechanical behavior of HDPE markedly well. The calibrated TNM is used in the FEA study to investigate the leakage performance of the HDPE connection at various temperatures (23, 40, 60 and 80 °C) at isothermal conditions over a service time of one year. The FEA results reveal that the flanged connection can experience leakage at all temperatures due to insufficient bolt preload. It is also found that leakage occurs prematurely as temperature increases. To simulate a realistic scenario resembling an above ground piping system, an annual temperature profile for a selected geographic location was prescribed to the model to simulate leakage over a one year period. Based on the results, several bolt re-torqueing plans were explored and suggestions are made on the best bolt re-torqueing practice for preventing leakage over the service life of the HDPE connection. Journal Article International Journal of Pressure Vessels and Piping 191 104375 Elsevier BV 0308-0161 Bolted flange, HDPE, Three network model, Flanged connection, FEA, Temperature, Leakage, Torque 1 6 2021 2021-06-01 10.1016/j.ijpvp.2021.104375 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2021-04-19T16:29:45.1626152 2021-03-18T09:07:46.1208067 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering A. Shahin 1 I. Barsoum 2 Feras Korkees 0000-0002-5131-6027 3 56458__19500__3651d2692fda43a6904ab220d0080b55.pdf 56458.pdf 2021-03-18T09:14:45.8707225 Output 5280047 application/pdf Accepted Manuscript true 2022-03-17T00:00:00.0000000 ©2021 All rights reserved. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND) true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title Analysis of a HDPE flanged connection with a time and temperature dependent constitutive behavior
spellingShingle Analysis of a HDPE flanged connection with a time and temperature dependent constitutive behavior
Feras Korkees
title_short Analysis of a HDPE flanged connection with a time and temperature dependent constitutive behavior
title_full Analysis of a HDPE flanged connection with a time and temperature dependent constitutive behavior
title_fullStr Analysis of a HDPE flanged connection with a time and temperature dependent constitutive behavior
title_full_unstemmed Analysis of a HDPE flanged connection with a time and temperature dependent constitutive behavior
title_sort Analysis of a HDPE flanged connection with a time and temperature dependent constitutive behavior
author_id_str_mv 4d34f40e38537261da3ad49a0dd2be09
author_id_fullname_str_mv 4d34f40e38537261da3ad49a0dd2be09_***_Feras Korkees
author Feras Korkees
author2 A. Shahin
I. Barsoum
Feras Korkees
format Journal article
container_title International Journal of Pressure Vessels and Piping
container_volume 191
container_start_page 104375
publishDate 2021
institution Swansea University
issn 0308-0161
doi_str_mv 10.1016/j.ijpvp.2021.104375
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 1
active_str 0
description High density polyethylene (HDPE) piping systems are used extensively in both industrial and societal infrastructure. However, their performance is sometimes impacted due to leakage through flanges, especially HDPE pipes with large diameters. Many factors affect leakage, including stress relaxation in the HDPE material and ambient temperature effects. Hence, this study investigates the effect of temperature on the leakage of a HDPE flanged connection with steel backing rings. It incorporates the effects of stress relaxation and temperature on the HDPE material and assesses the degradation of performance of the connection with time by means of finite element analysis (FEA). The temperature and time dependent mechanical properties of the HDPE material are determined experimentally through tensile, compression and relaxation testing conducted at various temperatures under isothermal conditions. The constitutive behavior of the HDPE material is modeled using the nonlinear visco-elastic plastic three network model (TNM), which predicts the mechanical behavior of HDPE markedly well. The calibrated TNM is used in the FEA study to investigate the leakage performance of the HDPE connection at various temperatures (23, 40, 60 and 80 °C) at isothermal conditions over a service time of one year. The FEA results reveal that the flanged connection can experience leakage at all temperatures due to insufficient bolt preload. It is also found that leakage occurs prematurely as temperature increases. To simulate a realistic scenario resembling an above ground piping system, an annual temperature profile for a selected geographic location was prescribed to the model to simulate leakage over a one year period. Based on the results, several bolt re-torqueing plans were explored and suggestions are made on the best bolt re-torqueing practice for preventing leakage over the service life of the HDPE connection.
published_date 2021-06-01T04:11:26Z
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score 11.016235

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