Structure and crack growth in gas pipes of medium-density and high-density polyethylene

1996 ◽  
Vol 36 (16) ◽  
pp. 2069-2076 ◽  
Author(s):  
T. Tränkner ◽  
M. Hedenqvist ◽  
U. W. Gedde
Keyword(s):  
Crack Growth ◽  
High Density Polyethylene ◽  
High Density ◽  
Medium Density

Application of Crack Layer in Modeling of Slow Crack Growth in High-Density Polyethylene

2013 ◽  
Author(s):  
Haiying Zhang ◽  
Zhenwen Zhou ◽  
Alexander Chudnovsky
Keyword(s):  
Crack Growth ◽  
High Density Polyethylene ◽  
Slow Crack Growth ◽  
Growth Failure ◽  
High Density ◽  
Large Set ◽  
Layer Model ◽  
Crack Layer ◽  
Basic Parameters ◽  
Engineering Polymers

Crack layer model provides a comprehensive foundation for modeling of fracture growth, failure analysis, and lifetime prediction. During the past two decades, it has been widely applied for modeling various aspects of brittle fracture in general. This paper illustrates in details the procedure of implementation by an example of slow crack growth in a commercialized high-density polyethylene undergoing creep conditions. Firstly, we determine experimentally the basic parameters employed in constitutive equations of crack layer model such as draw ratio λ, the specific energy of transformation γtr, and drawing stress σdr, etc.. Secondly, we implement crack layer model numerically in lab-developed “Simulator”. The paper provides a paradigm for implementation of crack layer model in slow crack growth, and a blueprint for potential software development that can be used in ranking and the lifetime assessment of a large set of engineering polymers.

Crack Growth in High-Density Polyethylene Pipes

1984 ◽  
Vol 12 (6) ◽  
pp. 371 ◽  
Author(s):  
KA Peters ◽  
S Gebremedhin ◽  
RL Meltzer ◽  
M Bruce Vieth ◽  
PA Gradin ◽  
...  
Keyword(s):  
Crack Growth ◽  
High Density Polyethylene ◽  
High Density ◽  
Polyethylene Pipes

Experimental study of the crack depth ratio threshold to analyze the slow crack growth by creep of high density polyethylene pipes

2014 ◽  
Vol 122 ◽  
pp. 22-30 ◽  
Author(s):  
Lucien Laiarinandrasana ◽  
Clémence Devilliers ◽  
Jean Marc Lucatelli ◽  
Emmanuelle Gaudichet-Maurin ◽  
Jean Michel Brossard
Keyword(s):  
Experimental Study ◽  
Crack Growth ◽  
High Density Polyethylene ◽  
Slow Crack Growth ◽  
Crack Depth ◽  
High Density ◽  
Polyethylene Pipes ◽  
Depth Ratio ◽  
Crack Depth Ratio
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