Research on the indentation behavior and safety evaluation of PE gas pipeline under point load

Gang Hu, Zhen Ma, Peng Liu, Guorong Wang, Qiang Pu, School of Mechatronic Engineering, Southwest Petroleum University, Energy Equipment Research Institute, Southwest Petroleum University, China Petroleum Technical Service Co

Journal of Thermoplastic Composite Materials

Published online on December 27, 2025

Abstract

Journal of Thermoplastic Composite Materials, Ahead of Print.
Polyethylene (PE) gas pipelines are often buried underground, and natural settlement of the earth’s ground can cause hard objects in the soil to press against the surface of the pipeline, forming point load. This results in stress concentration and ...