The research of stress monitor and broken testing for steel wire rope

To estimate the security of steel wire rope, investigated the broken wire condition, the capability of the rope to bear weight and the state of stress balance of each wire in the steel wire rope. The wavelet translation method has been applied to analyze the signals of the leakage magnetic field from the steel wire rope. The result of the time-frequency analysis of the signals can be used to make certain the position and the amount of the broken wire. According to the static surveillance method, we designed the dynamic surveillance method to detect the stress balance of the steel wire rope. This technology makes it possible to check the stress condition of each wire on line. We conclude that the wavelet translation analysis and the dynamic surveillance technique are effective methods to detect on line and real-time the broken wire and the stress balance of many-wire.