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Changes of Fatigue Property with Heat Exposure in INVAR/AW Wire

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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 1000hr, 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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Periodical:

Materials Science Forum (Volumes 475-479)

Pages:

1873-1876

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.475-479.1873

Citation:

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Online since:

January 2005

Authors:

Shang Shu Kim, Su Dong Park, Byung Geol Kim, Hee Woong Lee, Goo Yong Sin, Dong Il Lee, Byung Uk Min

Keywords:

Fatigue, INVAR/AW, STACIR/AW, Strand Wires

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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