Detection of wire disconnection using new rope tester
In order to maintain the safety, it is important to examine the wire rope of an elevator. We have developed a rope tester that is a kind of sensor to detect damages of the wire rope for an elevator. The rope tester detects the damages by using leakage flux at the damaged point. The damages of the wire rope are detected and to quantitatively be recorded by the rope tester. In case of a former rope are excited the wire rope in direct current, remanence magnetic flux at a wire rope is not small and sometimes causes a misdiagnosis. In this paper, a new rope tester by AC excitation is described. The damage at the surface of the wire rope can be detected with this rope tester. The output voltages at damaged point of the rope are from 2.0 volts to 5.5 volts. It is experimentally confirmed that the output voltages are not influenced by scanning speed and the remanence magnetic flux.
Elevator wire rope rope tester leakage flux AC excitation
Yutaka HIRAMA Hiroyuki WAKIWAKA Kunihisa TASHIRO Xiaoming CHANG Akiyoshi NAGAO
Non-Destructive Inspection Consulting Engineer, Tamiya Cho, Ushiku City, Ibaragi Faculty of Engineering, Shinshu University: 4-17-1, Wakasato, Nagano, Japan Taiyuan University of Technology College of Computer and Software Electronic Measuring Industry Co. Ltd.
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
2147-2152
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）