Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Mechanical Properties and Statistical Evaluation of EPR According to the Accelerated Degradation

EPR의 가속 열화에 의한 기계적 특성 및 통계적 평가

  • 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)
  • 김지연 (원광대학교 정보통신공학과) ;
  • 양종석 (원광대학교 정보통신공학과) ;
  • 이길수 (한국원자력안전기술원) ;
  • 성백용 (원광대학교 정보통신공학과) ;
  • 방정환 (서남대학교 보건환경학과) ;
  • 박대희 (원광대학교 정보통신공학과)
  • Received : 2015.07.09
  • Accepted : 2015.07.24
  • Published : 2015.08.01
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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.

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References

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