Modeling and application of discontinuous slow crack growth behaviors of high-density polyethylene pipe with various geometries and loading conditions

Jung Wook Wee; Sang Youn Park; Byoung Ho Choi

doi:10.1016/j.engfracmech.2020.107205

Modeling and application of discontinuous slow crack growth behaviors of high-density polyethylene pipe with various geometries and loading conditions

Jung Wook Wee, Sang Youn Park, Byoung Ho Choi

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

A slow crack growth model based on the crack layer theory for various geometries of a high-density polyethylene (HDPE) pipe is developed to investigate the discontinuous slow crack growth (SCG) behavior of HDPE pipes. Discontinuous SCG patterns, jump lengths, and periods can be accurately simulated using the proposed model. In addition, effects of soil embedding height, internal pressure, and ground pressure on the discontinuous SCG behavior and consequent lifetime are investigated. It is confirmed that the additional ground pressure increased the discontinuous SCG rates of the buried HDPE pipes, thereby reducing the final lifetime considerably.

Original language	English
Article number	107205
Journal	Engineering Fracture Mechanics
Volume	236
DOIs	https://doi.org/10.1016/j.engfracmech.2020.107205
Publication status	Published - 2020 Sept

Bibliographical note

Funding Information:
This work was supported by the Ministry of Trade, Industry and Energy (MOTIE) and the Korea Institute for Advancement of Technology (KIAT) through the Encouragement Program (R&D, P0002115 ) for the Industries of Economic Cooperation region.

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

Crack growth
Fracture mechanics
Life prediction
Pipelines
Polymers
Stress intensity factor

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1016/j.engfracmech.2020.107205

Cite this

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title = "Modeling and application of discontinuous slow crack growth behaviors of high-density polyethylene pipe with various geometries and loading conditions",

abstract = "A slow crack growth model based on the crack layer theory for various geometries of a high-density polyethylene (HDPE) pipe is developed to investigate the discontinuous slow crack growth (SCG) behavior of HDPE pipes. Discontinuous SCG patterns, jump lengths, and periods can be accurately simulated using the proposed model. In addition, effects of soil embedding height, internal pressure, and ground pressure on the discontinuous SCG behavior and consequent lifetime are investigated. It is confirmed that the additional ground pressure increased the discontinuous SCG rates of the buried HDPE pipes, thereby reducing the final lifetime considerably.",

keywords = "Crack growth, Fracture mechanics, Life prediction, Pipelines, Polymers, Stress intensity factor",

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note = "Funding Information: This work was supported by the Ministry of Trade, Industry and Energy (MOTIE) and the Korea Institute for Advancement of Technology (KIAT) through the Encouragement Program (R&D, P0002115 ) for the Industries of Economic Cooperation region. Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

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AU - Wee, Jung Wook

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AU - Choi, Byoung Ho

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N2 - A slow crack growth model based on the crack layer theory for various geometries of a high-density polyethylene (HDPE) pipe is developed to investigate the discontinuous slow crack growth (SCG) behavior of HDPE pipes. Discontinuous SCG patterns, jump lengths, and periods can be accurately simulated using the proposed model. In addition, effects of soil embedding height, internal pressure, and ground pressure on the discontinuous SCG behavior and consequent lifetime are investigated. It is confirmed that the additional ground pressure increased the discontinuous SCG rates of the buried HDPE pipes, thereby reducing the final lifetime considerably.

AB - A slow crack growth model based on the crack layer theory for various geometries of a high-density polyethylene (HDPE) pipe is developed to investigate the discontinuous slow crack growth (SCG) behavior of HDPE pipes. Discontinuous SCG patterns, jump lengths, and periods can be accurately simulated using the proposed model. In addition, effects of soil embedding height, internal pressure, and ground pressure on the discontinuous SCG behavior and consequent lifetime are investigated. It is confirmed that the additional ground pressure increased the discontinuous SCG rates of the buried HDPE pipes, thereby reducing the final lifetime considerably.

KW - Crack growth

KW - Fracture mechanics

KW - Life prediction

KW - Pipelines

KW - Polymers

KW - Stress intensity factor

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DO - 10.1016/j.engfracmech.2020.107205

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SN - 0013-7944

VL - 236

JO - Engineering Fracture Mechanics

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ER -

Modeling and application of discontinuous slow crack growth behaviors of high-density polyethylene pipe with various geometries and loading conditions

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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