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http://dx.doi.org/10.4313/JKEM.2015.28.8.501

Mechanical Properties and Statistical Evaluation of EPR According to the Accelerated Degradation  

Kim, Ji-Yeon (Department of Information & Communication Engineering, WonKwang University)
Yang, Jong-Suk (Department of Information & Communication Engineering, WonKwang University)
Lee, Gil-Soo (Korea Institute of Nuclear Safety, Instrumentation & Electrical Evaluation Center)
Seong, Baek-Yong (Department of Information & Communication Engineering, WonKwang University)
Bang, Jeong-Hwan (Department of Environmental Health, Seonam University)
Park, Dae-Hee (Department of Information & Communication Engineering, WonKwang University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.28, no.8, 2015 , pp. 501-507 More about this Journal
Abstract
In this paper, EPR (ethylene propylene rubber) insulation material was accelerated degradation test at $121^{\circ}C$, $136^{\circ}C$, $151^{\circ}C$, and experiment the typical EAB (elongation at break) at mechanical characteristics analysis. It is shown that the failure-time at the point of 50% of the initial value of Elongation rate to obtain the activation energy. The failure-time was shown each 5,219 hr, 3,165 hr, and 668 hr at three temperatures. In order to derive the activation energy, Arrhenius methodology was applied. Also, we got the Arrhenius plot from three accelerated temperatures. The activation energy values got 0.98 eV from EAB test. The experimental data were evaluated for estimating the probability density, and the suitable distribution by using statistical program MINITAB. It is shown that EAB data by the acceleration thermal degradation is most suitable for the Weibull distribution.
Keywords
Nuclear cable; EPR; Arrhenius equation; Activation energy; EAB; Statistical evaluation;
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Times Cited By KSCI : 1  (Citation Analysis)
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