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A Testing Method for Small Specimen Bulging Test for Evaluating the Mechanical Property of High-Density Polyethylene
Bo Zhao1, Yunxiang Chen2, Lixian Wang1
1State Key Laboratory of Low-Carbon Thermal Power Generation Technology and Equipments, China Special Equipment Inspection and Research Institute, Beijing 100029, China.
Polymers
|June 13, 2025
Summary
This study improved the small specimen bulging test (SBT) for high-density polyethylene (HDPE). The enhanced method accurately models HDPE
Area of Science:
- Materials Science
- Mechanical Engineering
- Polymer Science
Background:
- High-density polyethylene (HDPE) is a versatile engineering material with broad applications.
- Accurate assessment of HDPE's mechanical performance under complex stress is challenging.
Purpose of the Study:
- To develop an improved small specimen bulging test (SBT) for precise HDPE deformation resistance evaluation.
- To establish a more accurate material response model for HDPE.
Main Methods:
- Combined an improved small specimen bulging test (SBT) with finite element simulation (ABAQUS 2017).
- Evaluated HDPE deformation resistance under hydraulic bulging conditions.
Main Results:
- Maximum bulging pressure reached approximately 22 MPa, with a maximum bulging height of 2.6 mm.
- Identified three distinct deformation stages: elastic, plastic, and large deformation near failure.
Conclusions:
- The developed method provides a more accurate material response model for HDPE.
- The model enhances understanding of HDPE behavior under stress, aiding engineering design and material selection.
Keywords:
finite element modelinghigh-density polyethylenehydraulic bulging testmechanical propertiessmall specimenMore Related Videos
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