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On-line Access: 2010-10-05

Received: 2010-03-29

Revision Accepted: 2010-06-15

Crosschecked: 2010-09-06

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Journal of Zhejiang University SCIENCE A 2010 Vol.11 No.10 P.804-810

10.1631/jzus.A1000131


Experimental study on uniaxial time-dependent ratcheting of a polyetherimide polymer


Author(s):  Dou-xing Pan, Guo-zheng Kang, Zhi-wu Zhu, Yu-jie Liu

Affiliation(s):  School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China

Corresponding email(s):   guozhengkang@yahoo.com.cn

Key Words:  Polyetherimide (PEI) polymer, Uniaxial ratcheting, Time-dependence, Cyclic loading, Viscosity


Dou-xing Pan, Guo-zheng Kang, Zhi-wu Zhu, Yu-jie Liu. Experimental study on uniaxial time-dependent ratcheting of a polyetherimide polymer[J]. Journal of Zhejiang University Science A, 2010, 11(10): 804-810.

@article{title="Experimental study on uniaxial time-dependent ratcheting of a polyetherimide polymer",
author="Dou-xing Pan, Guo-zheng Kang, Zhi-wu Zhu, Yu-jie Liu",
journal="Journal of Zhejiang University Science A",
volume="11",
number="10",
pages="804-810",
year="2010",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1000131"
}

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%T Experimental study on uniaxial time-dependent ratcheting of a polyetherimide polymer
%A Dou-xing Pan
%A Guo-zheng Kang
%A Zhi-wu Zhu
%A Yu-jie Liu
%J Journal of Zhejiang University SCIENCE A
%V 11
%N 10
%P 804-810
%@ 1673-565X
%D 2010
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1000131

TY - JOUR
T1 - Experimental study on uniaxial time-dependent ratcheting of a polyetherimide polymer
A1 - Dou-xing Pan
A1 - Guo-zheng Kang
A1 - Zhi-wu Zhu
A1 - Yu-jie Liu
J0 - Journal of Zhejiang University Science A
VL - 11
IS - 10
SP - 804
EP - 810
%@ 1673-565X
Y1 - 2010
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1000131


Abstract: 
The uniaxial ratcheting behavior of a polyetherimide (PEI) polymer ‘TECAPEI’ was studied using stress-controlled cyclic loading at room temperature, including both cyclic tension-compression with non-zero tensile mean stress and tension-unloading tests. The experimental observations were focused on the time-dependent ratcheting of the PEI polymer revealed in cyclic tests at diverse stress rates and with different peak stress holding times. The results showed that the PEI polymer shows obvious ratcheting deformation; i.e., the ratcheting strain accumulates progressively in the tensile direction during stress-controlled cyclic tests with non-zero mean stress. The ratcheting is highly dependent on the applied mean stress and stress amplitude, and is also characterized by a strong time-dependency during the cyclic stressing at diverse stress rates and with different peak stress holding times. The time-dependent ratcheting of the PEI polymer is caused mainly by its remarkable viscosity. A comparison of the ratcheting occurring before and beyond the ultimate stress point of the PEI polymer showed that the ratcheting beyond the ultimate stress point is more significant than that occurring before that point.

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