The Relationship Between The Fatigue Damage And The Group Speed Of Guided Waves In The Steel Wire
INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS(2020)
Abstract
Failure of the cables can cause a bridge to collapse. Fatigue damage of steel wire is one of the causes of cable failure. In this paper, we study the relationship between the fatigue damage and the group speed of guided waves in the steel wire. The relationship between cyclic loading times and group speed of steel wire is obtained by applying tension to steel wire. The results show that the group speed of guided waves increases linearly before the 6.02 million cyclic-loading times, increases exponentially from 6.02 to 6.97 million times. The curve of the relationship between the group speed of the guided waves and the number of cyclic loading times can be fitted to an exponential function, and this curve can be used as a calibration curve to evaluate the fatigue damage of steel wire.
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Key words
Group speed,guided waves,fatigue damage,steel wire
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