Burst Pressures of High-Density Polyethylene 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

Investigation of the Notch Impact on the Internal Pressure Resistance of HDPE Pipes: An Experimental and FEA Study.

“…In the pursuit of predicting burst pressure and assessing the stress and strain field along or around the pipe, ONO et al [10] utilized mechanoluminescent sensors to visualize internal defects. Xiaotao et al [11] conducted experimental and numerical studies on HDPE pipes with various notch geometries and depth ratios, revealing significant impacts of notch shape on burst pressures. Additionally, burst pressure notably decreased with increasing notch depth ratio [12,13].…”

Experimental study and finite element analysis of notch effect on HDPE pipes’ resistance under internal pressure

“…They found that the hoop strain on the defective pipe had maximum and minimum values around the defect and the maximum hoop strain increased with deepening the defect. Xiaotao et al [11] presented experimental and numerical studies on burst pressures of HDPE pipes with various notch geometries and different depth ratios to predict the damage behaviors of notched HDPE pipes using burst tests and the Linear Miner Damage (LMD) model, they found that the notch shape impacts the burst pressures of HDPE pipes significantly. Moreover, the burst pressure remarkably decreases with the increment of the notch depth ratio [12,13].…”