基于磁場梯度和能量法的鋼絲繩斷絲檢測(cè)方法

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中圖分類號(hào)：TB9；TU37 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：1674-5124（2025）06-0040-09

Steel wire rope breakage detection method based on magnetic field gradient and energy method

JIANG Shenghual12.3，LI Xiaoqing1，CHEN Bin1，LI Xinyao1 （1. College of Engineering and Technology， Southwest University， Chongqing 400715， China; 2. School of Civil Engineering，Dalian University of Technology，Dalian 116024， China; 3. Yibin Academy of Southwest University， Yibin 6440o0，China）

Abstract： The breakage of wire ropes poses a significant threat to the proper functioning and safety of mechanical equipment. The existing self magnetic leakage detection technology has the advantage of not requiring excitation，but it has the influence of environmental magnetic field. A wire rope breakage detection technique is proposed utilizing magnetic gradient tensors and energy methods and the weak magnetic test system of steel wire rope breaking is developed.The experimental results show that as the wire rope breaks， the inflection point of crest and trough appears in the magnetic gradient B?Txz and B?Tyz curves， and the wave peak appears in the BTzz curve.When 3，6，9，12，17，22，25 and 30 wires are broken，compared with the actual position of broken wires and position judged by the abrupt change of magnetic field gradient curve the maximum error， minimum error， average error and standard deviation of error are 5.36% 2 2.26% ， 3.57% and

1.22% ， respectively. The position of broken wire judged by the magnetic gradient tensor is basically consistent with the actual position of broken wire. With the increase of the number of broken wires，the trough depth， peak height， trough and peak's width of the magnetic field gradient curve increase.The energy of the magnetic gradient in the broken region of the wire rope increases proportionaly with the number of broken wires.The detection method， which is based on the magnetic field gradient and energy，has been tested and proven to be both feasible and effective.

Keywords： steel wire rope; wire breakage; detection; magnetic field gradien; energy method

0 引言

鋼絲繩普遍使用在各種工程領(lǐng)域，如港口、冶金、采礦、交通、水利、建筑等設(shè)備的承載和牽引。（剩余10031字）