This paper presents a method of health monitoring for coated steel belts in an elevator system by measuring the electrical resistance\r\nof the ropes embedded in the belt. A model on resistance change caused by fretting wear and stress fatigue has been established.\r\nTemperature and reciprocating cycles are also taken into consideration when determining the potential strength degradation of the\r\nbelts. It is proved by experiments that the method could effectively estimate the health degradation of the most dangerous section\r\nas well as other ones along the whole belts.
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