Nonlinear Creep in a Polymer Glass

2008 ◽  
Vol 41 (13) ◽  
pp. 4969-4977 ◽  
Author(s):  
Robert A. Riggleman ◽  
Kenneth S. Schweizer ◽  
Juan J. de Pablo
Keyword(s):  
Nonlinear Creep ◽  
Polymer Glass

scholarly journals Relaxation time of a polymer glass stretched at very large strains

2020 ◽  
Vol 4 (3) ◽  
Author(s):  
R. Sahli ◽  
J. Hem ◽  
C. Crauste-Thibierge ◽  
F. Clément ◽  
D. R. Long ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Large Strains ◽  
Polymer Glass

scholarly journals Proton-conductive coordination polymer glass for solid-state anhydrous proton batteries

2021 ◽  
Vol 12 (16) ◽  
pp. 5818-5824
Author(s):  
Nattapol Ma ◽  
Soracha Kosasang ◽  
Atsushi Yoshida ◽  
Satoshi Horike
Keyword(s):  
Mechanical Properties ◽  
Solid State ◽  
Coordination Polymer ◽  
Proton Battery ◽  
Polymer Glass

Melt-quenched coordination polymer glass shows exclusive H+ conductivity (8.0 × 10−3 S cm−1 at 120 °C, anhydrous) and optimal mechanical properties (42.8 Pa s at 120 °C), enables the operation of an all-solid-state proton battery from RT to 110 °C.

An improved nonlinear damage model of rocks considering initial damage and damage evolution

2020 ◽  
Vol 29 (7) ◽  
pp. 1117-1137 ◽  
Author(s):  
Wenlin Feng ◽  
Chunsheng Qiao ◽  
Shuangjian Niu ◽  
Zhao Yang ◽  
Tan Wang
Keyword(s):  
Damage Evolution ◽  
Least Squares Method ◽  
Damage Model ◽  
Creep Damage ◽  
Secondary Creep ◽  
Nonlinear Creep ◽  
Creep Failure ◽  
Initial Damage ◽  
Nonlinear Damage Model ◽  
Creep Damage Model

The experimental results show that the creep properties of the rocks are affected by the initial damage, and the damage evolution also has a significant impact on the time-dependent properties of the rocks during the creep. However, the effects of the initial damage and the damage evolution are seldom considered in the current study of the rocks' creep models. In this paper, a new nonlinear creep damage model is proposed based on the multistage creep test results of the sandstones with different damage degrees. The new nonlinear creep damage model is improved based on the Nishihara model. The influences of the initial damage and the damage evolution on the components in the Nishihara model are considered. The creep damage model can not only describe the changes in three creep stages, namely, the primary creep, the secondary creep, and the tertiary creep, but also reflect the influence of the initial damage and the damage evolution on creep failure. The nonlinear least squares method is used to determine the parameters in the nonlinear creep damage model. The consistency between the experimental data and the predicted results indicates the applicability of the nonlinear damage model to accurately predict the creep deformation of the rocks with initial damage.

scholarly journals Polymer glass transition occurs at the marginal rigidity point with connectivity z* = 4

Soft Matter ◽  
2016 ◽  
Vol 12 (35) ◽  
pp. 7330-7337 ◽  
Author(s):  
Anna Lappala ◽  
Alessio Zaccone ◽  
Eugene M. Terentjev
Keyword(s):  
Glass Transition ◽  
Polymer Glass
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