scholarly journals Extrapolation of creep behavior of high-density polyethylene liner in the Catch Basin of grout vaults

10.2172/86891 ◽  
1995 ◽  
Author(s):  
G.A. Whyatt
Keyword(s):  
Creep Behavior ◽  
High Density Polyethylene ◽  
High Density ◽  
Polyethylene Liner ◽  
Catch Basin

High Density Polyethylene Liner: Successful Alternative Against Corrosion and Wear Problems in Production Tubing of Mature Fields in Colombia

2020 ◽  
Author(s):  
Gloria Isabel Duarte Poveda ◽  
Miguel Mateus Barragán ◽  
José Alexander Estévez Lizarazo ◽  
Jorge Mario Doval ◽  
Patricia Barragán
Keyword(s):  
High Density Polyethylene ◽  
Corrosion And Wear ◽  
High Density ◽  
Polyethylene Liner ◽  
Production Tubing

scholarly journals Flexural Creep Behavior of High-Density Polyethylene Lumber and Wood Plastic Composite Lumber Made from Thermally Modified Wood

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 262 ◽  
Author(s):  
Murtada Abass A. Alrubaie ◽  
Roberto A. Lopez-Anido ◽  
Douglas J. Gardner
Keyword(s):  
Creep Behavior ◽  
Creep Deformation ◽  
High Density Polyethylene ◽  
Creep Compliance ◽  
High Density ◽  
Wood Plastic Composite ◽  
Creep Stress ◽  
Plastic Composite ◽  
Thermally Modified Wood ◽  
Modified Wood

The use of wood plastic composite lumber as a structural member material in marine applications is challenging due to the tendency of wood plastic composites (WPCs) to creep and absorb water. A novel patent-pending WPC formulation that combines a thermally modified wood flour (as a cellulosic material) and a high strength styrenic copolymer (high impact polystyrene and styrene maleic anhydride) have been developed with advantageous viscoelastic properties (low initial creep compliance and creep rate) compared with the conventional WPCs. In this study, the creep behavior of the WPC and high-density polyethylene (HDPE) lumber in flexure was characterized and compared. Three sample groupings of WPC and HDPE lumber were subjected to three levels of creep stress; 7.5, 15, and 30% of the ultimate flexural strength (Fb) for a duration of 180 days. Because of the relatively low initial creep compliance of the WPC specimens (five times less) compared with the initial creep compliance of HDPE specimens, the creep deformation of HDPE specimens was six times higher than the creep deformation of WPC specimens at the 30% creep stress level. A Power Law model predicted that the strain (3%) to failure in the HDPE lumber would occur in 1.5 years at 30% Fb flexural stress while the predicted strain (1%) failure for the WPC lumber would occur in 150 years. The findings of this study suggest using the WPC lumber in structural application to replace the HDPE lumber in flexure attributable to the low time-dependent deformation when the applied stress value is withing the linear region of the stress-strain relationship.

scholarly journals Investigation of Tensile Creep Behavior for High-Density Polyethylene (HDPE) via Experiments and Mathematical Model

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6188
Author(s):  
Qiang Mao ◽  
Buyun Su ◽  
Ruiqiang Ma ◽  
Zhiqiang Li
Keyword(s):  
Creep Behavior ◽  
High Density Polyethylene ◽  
Strain Curve ◽  
Reference Value ◽  
High Density ◽  
Tensile Creep ◽  
Uniaxial Tensile ◽  
Form Model ◽  
Short Time ◽  
Parameter Values

Temperatures of −25 °C, +5 °C, and +35 °C were selected to study the creep behavior of high-density polyethylene (HDPE). The ultimate tensile strength of HDPE materials was obtained through uniaxial tensile experiments and the time–strain curves were obtained through creep experiments. When the loaded stress levels were lower than 60% of the ultimate strength, the specimens could maintain a longer time in the stable creep stage and were not prone to necking. In contrast, the specimens necked in a short time. Then, the time hardening form model was applied to simulate the time–strain curve and the parameter values were solved. The parameter values changed exponentially with the stresses, thereby expanding and transforming the time hardening model. The expanded model can easily and accurately predict creep behaviors of the initial and stable creep stages as well as the long-term deformations of HDPE materials. This study would provide a theoretical basis and reference value for engineering applications of HDPE.

Compressive creep behavior of silane treated TiO2/high-density polyethylene

2010 ◽  
Vol 45 (7) ◽  
pp. 1796-1802 ◽  
Author(s):  
C. X. Dong ◽  
S. J. Zhu ◽  
M. Mizuno ◽  
M. Hashimoto
Keyword(s):  
Creep Behavior ◽  
High Density Polyethylene ◽  
High Density ◽  
Compressive Creep
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