Burst pressures of high density polyethylene (HDPE) pipes considering the notch effect: testing and prediction

Xiaotao Zheng, Jiqiang Wang, Haofeng Chen

Research output: Contribution to journalArticle

Abstract

This work aims at testing and predicting burst pressures of HDPE pipes with various groove conditions. Four types of notches including U-type, V-type, L-Type (linear type) and R-type (rectangular type) with different depth ratios are discussed. A unified damage model is proposed to predict the damage behaviors of notched HDPE pipes for different notch shapes. Results indicate that the notch shape has an important influence on the burst pressure of HDPE pipe. Generally, the impact extent from high to low in order is the R-type, U-type, V-type, and L-type according to the experimental data. The burst pressure obviously decreases with the increment of the notch depth ratio. However, when the notch depth is less than 0.5mm in this work, the burst pressure reduces slightly compared with that of the virgin pipe due to its good fracture toughness. Moreover, the predicted damage factors by the proposed model agree very well with the experimental data under different groove shapes. This work provides important experimental data and damage assessment approach for various notched HDPE pipes.
LanguageEnglish
Number of pages28
JournalJournal of Testing and Evaluation
Publication statusAccepted/In press - 5 Feb 2019

Fingerprint

Polyethylene
High density polyethylenes
Pipe
Testing
Fracture toughness

Keywords

  • notch effect
  • HDPE pipes
  • burst pressure
  • damage
  • prediction model

Cite this

@article{2bd62f1ac9df4a658af8761414d003d0,
title = "Burst pressures of high density polyethylene (HDPE) pipes considering the notch effect: testing and prediction",
abstract = "This work aims at testing and predicting burst pressures of HDPE pipes with various groove conditions. Four types of notches including U-type, V-type, L-Type (linear type) and R-type (rectangular type) with different depth ratios are discussed. A unified damage model is proposed to predict the damage behaviors of notched HDPE pipes for different notch shapes. Results indicate that the notch shape has an important influence on the burst pressure of HDPE pipe. Generally, the impact extent from high to low in order is the R-type, U-type, V-type, and L-type according to the experimental data. The burst pressure obviously decreases with the increment of the notch depth ratio. However, when the notch depth is less than 0.5mm in this work, the burst pressure reduces slightly compared with that of the virgin pipe due to its good fracture toughness. Moreover, the predicted damage factors by the proposed model agree very well with the experimental data under different groove shapes. This work provides important experimental data and damage assessment approach for various notched HDPE pipes.",
keywords = "notch effect, HDPE pipes, burst pressure, damage, prediction model",
author = "Xiaotao Zheng and Jiqiang Wang and Haofeng Chen",
year = "2019",
month = "2",
day = "5",
language = "English",
journal = "Journal of Testing and Evaluation",
issn = "0090-3973",

}

TY - JOUR

T1 - Burst pressures of high density polyethylene (HDPE) pipes considering the notch effect

T2 - Journal of Testing and Evaluation

AU - Zheng, Xiaotao

AU - Wang, Jiqiang

AU - Chen, Haofeng

PY - 2019/2/5

Y1 - 2019/2/5

N2 - This work aims at testing and predicting burst pressures of HDPE pipes with various groove conditions. Four types of notches including U-type, V-type, L-Type (linear type) and R-type (rectangular type) with different depth ratios are discussed. A unified damage model is proposed to predict the damage behaviors of notched HDPE pipes for different notch shapes. Results indicate that the notch shape has an important influence on the burst pressure of HDPE pipe. Generally, the impact extent from high to low in order is the R-type, U-type, V-type, and L-type according to the experimental data. The burst pressure obviously decreases with the increment of the notch depth ratio. However, when the notch depth is less than 0.5mm in this work, the burst pressure reduces slightly compared with that of the virgin pipe due to its good fracture toughness. Moreover, the predicted damage factors by the proposed model agree very well with the experimental data under different groove shapes. This work provides important experimental data and damage assessment approach for various notched HDPE pipes.

AB - This work aims at testing and predicting burst pressures of HDPE pipes with various groove conditions. Four types of notches including U-type, V-type, L-Type (linear type) and R-type (rectangular type) with different depth ratios are discussed. A unified damage model is proposed to predict the damage behaviors of notched HDPE pipes for different notch shapes. Results indicate that the notch shape has an important influence on the burst pressure of HDPE pipe. Generally, the impact extent from high to low in order is the R-type, U-type, V-type, and L-type according to the experimental data. The burst pressure obviously decreases with the increment of the notch depth ratio. However, when the notch depth is less than 0.5mm in this work, the burst pressure reduces slightly compared with that of the virgin pipe due to its good fracture toughness. Moreover, the predicted damage factors by the proposed model agree very well with the experimental data under different groove shapes. This work provides important experimental data and damage assessment approach for various notched HDPE pipes.

KW - notch effect

KW - HDPE pipes

KW - burst pressure

KW - damage

KW - prediction model

UR - https://www.astm.org/DIGITAL_LIBRARY/JOURNALS/TESTEVAL/index.html

M3 - Article

JO - Journal of Testing and Evaluation

JF - Journal of Testing and Evaluation

SN - 0090-3973

ER -