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 |
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Article number | 107205 |
Journal | Engineering Fracture Mechanics |
Volume | 236 |
DOIs | |
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