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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Effect of Aging on fatigue of Al Clad INVAR Core Wire for High Capacity and Low Sag(STACIR/AW) Conductor ( 1 )

경년열화가 가공송전선(STACIR/AW)용 강심소재 Al Clad Invar 강선의 피로에 미치는 영향 ( 1 )

  • 김상수 (한국전기연구원 신소재응용연구그룹) ;
  • 김병걸 (한국전기연구원 신소재응용연구그룹) ;
  • 현석규 (한국전기연구원 신소재응용연구그룹) ;
  • 신구용 (한국전력공사 전력연구원) ;
  • 이동일 (한국전력공사 전력연구원) ;
  • 민병욱 (한국전력공사 송변전처 송변전건설팀)
  • Published : 2006.01.01
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Abstract

Fatigue properties of INVAR/AW wires have been investigated under the heat exposure in order to ensure stable operation and to estimate life span of their power line. In the case of heat exposure for 10000 hr, fatigue life and limit increased. For further heat exposure, fatigue limit decreased due to the decrease in yield strength. The variation fatigue of strand wire was strongly dependent on its amplitude. Also, cracks in wires of 7 strands were caused by stress concentration at the outer surface and fretting between each wire during vibration.

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References

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