Volume 48 Issue 9
Sep.  2022
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Article Navigation >  Journal of Mine Automation  > 2022  >  48(9): 84-91, 133
LIU Ning, XIN Song, HE Min, et al. Analysis of weak magnetic nondestructive testing for cracks in the top beam of hydraulic support[J]. Journal of Mine Automation，2022，48(9)：84-91, 133.  doi: 10.13272/j.issn.1671-251x.2022060108
Citation: LIU Ning, XIN Song, HE Min, et al. Analysis of weak magnetic nondestructive testing for cracks in the top beam of hydraulic support[J]. Journal of Mine Automation，2022，48(9)：84-91, 133.  doi: 10.13272/j.issn.1671-251x.2022060108
shu

Analysis of weak magnetic nondestructive testing for cracks in the top beam of hydraulic support

doi: 10.13272/j.issn.1671-251x.2022060108
  • 1.

    College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China

  • 2.

    Yantai Research Institute of Harbin Engineering University, Yantai 264000, China

  • Received Date: 2022-06-30
  • Rev Recd Date: 2022-08-30
    • Available Online: 2022-08-30
    Abstract
  • In view of the complicated operation of the current crack detection method of hydraulic support, a weak magnetic nondestructive detection method for cracks in the top beam of hydraulic support based on geomagnetic field excitation is proposed. Firstly, the stress field of the crack in the top beam of hydraulic support is analyzed by using COMSOL Multiphysics simulation software. Secondly, based on the principle of weak magnetic nondestructive testing, the geomagnetic field is loaded in the simulation space. The superimposed field formed by the magnetized material with crack defects and the geomagnetic field is obtained and analyzed. The results show the following points. ① There is stress concentration phenomenon in the top beam defect of hydraulic support. The lower the stress is, the greater the stress is. The crack expands from the outside to the inside to both sides. The failure risk of the top beam can be effectively reduced by finding the surface crack in time. ② When the length and depth of the crack defect are fixed, the horizontal distance between the valley and the peak and the peak value of the magnetic flux density mode curve of different width cracks increase with the increase of the width. The valley value decreases first and then increases with the increase of the width. The amplitude of the flux density mode increases with the crack width. The variation rate of the difference between the adjacent maximum valley and peak of the flux density mode decreases with the crack width. The change amplitude of magnetic flux density is positively correlated with the change of crack width. ③ When the length and width of the crack defect are fixed, the valley value of the magnetic flux density mode curve of different depth cracks has little difference. The left peak value increases with the increase of the width. The right peak value decreases with the increase of the width. With the increase of the crack depth, the change amplitude of the flux density mode increases. The change rate of the difference between the adjacent maximum valley and peak of the flux density mode is almost constant. The change amplitude of magnetic flux density is positively correlated with the change of crack depth. The magnetic flux density is more sensitive to the change of crack width than to the change of crack depth. ④ When the length, width and depth of the crack defect are fixed, the change in the direction of the crack does not affect the judgment of crack defects.

     

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    • References(21)
  • [1]
    王国法. 工作面支护与液压支架技术理论体系[J]. 煤炭学报,2014,39(8):1593-1601. doi: 10.13225/j.cnki.jccs.2014.9021

    WANG Guofa. Theoretical system of working face support and hydraulic support technology[J]. Journal of Coal,2014,39(8):1593-1601. doi: 10.13225/j.cnki.jccs.2014.9021
    [2]
    王国法. 综采自动化智能化无人化成套技术与装备发展方向[J]. 煤炭科学技术,2014,42(9):30-34,39.

    WANG Guofa. Development direction of automation intelligent unmanned set technology and equipment for header mining[J]. Coal Science and Technology,2014,42(9):30-34,39.
    [3]
    李建民,耿清友,周志坡. 我国煤矿综采技术应用现状与发展[J]. 煤炭科学技术,2012,40(10):55-60.

    LI Jianmin,GENG Qingyou,ZHOU Zhipo. Current situation and development of coal mine comprehensive mining technology application in China[J]. Coal Science and Technology,2012,40(10):55-60.
    [4]
    洪岸柳. 液压支架的结构强度与疲劳寿命分析[D]. 沈阳: 东北大学, 2012.

    HONG Anliu. Structural strength and fatigue life analysis of hydraulic support[D]. Shenyang: Northeastern University, 2012.
    [5]
    MENG Zhaosheng,ZENG Qingliang,GAO Kuidong,et al. Failure analysis of super-large mining height powered support[J]. Engineering Failure Analysis,2018,92:378-391. doi: 10.1016/j.engfailanal.2018.04.011
    [6]
    李世科. 基于LM−BP神经网络的液压支架顶梁疲劳寿命预测及应用[J]. 中国矿业,2019,28(5):92-96. doi: 10.12075/j.issn.1004-4051.2019.05.026

    LI Shike. Fatigue life prediction of hydraulic support roof beam based on LM-BP neural network and its application[J]. China Mining,2019,28(5):92-96. doi: 10.12075/j.issn.1004-4051.2019.05.026
    [7]
    徐鹏博. 两柱掩护式液压支架虚拟疲劳寿命分析研究[J]. 煤矿机械,2019,40(3):34-36.

    XU Pengbo. Study on analysis of virtual fatigue life of two-pillar mask hydraulic support[J]. Coal Mining Machinery,2019,40(3):34-36.
    [8]
    殷帅峰,何富连. 综放支架超声相控阵无损探伤原理与检测技术[J]. 采矿与安全工程学报,2012,29(3):328-333.

    YIN Shuaifeng,HE Fulian. Nondestructive testing principle and technology of hydraulic supports by ultrasonic phased array in top coal caving face[J]. Journal of Mining & Safety Engineering,2012,29(3):328-333.
    [9]
    陈渊. 煤矿液压支架缸体环焊缝缺陷超声检测与评价研究[D]. 西安: 西安科技大学, 2010.

    CHEN Yuan. Study on ultrasonic testing and evaluation of girth weld flaws for cylinders of hydraulic support used in coal mine[D]. Xi'an: Xi'an University of Science and Technology, 2010.
    [10]
    赵枰. 相控延时超声无损检测技术应用实践[J]. 机械管理开发,2019,34(1):110-111. doi: 10.16525/j.cnki.cn14-1134/th.2019.01.046

    ZHAO Ping. Application of phase-controlled delay ultrasonic nondestructive testing technology[J]. Machinery Management and Development,2019,34(1):110-111. doi: 10.16525/j.cnki.cn14-1134/th.2019.01.046
    [11]
    刘鸿玉. 浅谈液压支架结构件焊缝渗透显影检测技术的应用[J]. 能源与节能,2021(6):206-207. doi: 10.3969/j.issn.2095-0802.2021.06.090

    LIU Hongyu. Discussion on application of penetration development detection technology for welding lines of hydraulic support structural parts[J]. Energy and Energy Conservation,2021(6):206-207. doi: 10.3969/j.issn.2095-0802.2021.06.090
    [12]
    贺敏. 基于交流电磁场和涡流激励热成像的复合检测技术研究[D]. 北京: 中国石油大学（北京）, 2017.

    HE Min. Research on a combined testing technique based on ACFM and eddy current thermography[D]. Beijing: China University of Petroleum （Beijing）, 2017.
    [13]
    DUBOV A A. A study of metal properties using the method of magnetic memory[J]. Metal science and heat treatment,1997,39(9):401-405. doi: 10.1007/BF02469065
    [14]
    熊乐超,姜禹桐,孙鹏宇,等. 航空发动机涡轮叶片缺陷弱磁检测方法研究[J]. 失效分析与预防,2021,16(3):161-165. doi: 10.3969/j.issn.1673-6214.2021.03.002

    XIONG Lechao,JIANG Yutong,SUN Pengyu,et al. Weak magnetic methods on detecting defects in aviation engine turbine blade[J]. Failure Analysis and Prevention,2021,16(3):161-165. doi: 10.3969/j.issn.1673-6214.2021.03.002
    [15]
    彭贤虎,于润桥,郭萌梦. 基于弱磁技术的飞机导管裂纹缺陷检测[J]. 南昌航空大学学报(自然科学版),2020,34(4):44-50.

    PENG Xianhu,YU Runqiao,GUO Mengmeng. Aircraft tube crack defect detection based on weak-magnetic technology[J]. Journal of Nanchang Hangkong University (Natural Science),2020,34(4):44-50.
    [16]
    胡博,于润桥,徐伟津. 人工槽模拟GH4169涡轮盘表面裂纹缺陷的微磁检测[J]. 航空学报,2015,36(10):3450-3456.

    HU Bo,YU Runqiao,XU Weijin. Micro-magnetic NDT for surface crack defect in a GH4169 turbine disc simulated by artificial groove[J]. Acta Aeronautica et Astronautica Sinica,2015,36(10):3450-3456.
    [17]
    肖坤宇,徐彤,苏成明,等. 液压支架关键部件失效分析与寿命评估研究进展[J]. 中国表面工程,2022,35(1):97-106.

    XIAO Kunyu,XU Tong,SU Chengming,et al. Research progress on failure analysis and life assessment of key components of hydraulic supports[J]. China Surface Engineering,2022,35(1):97-106.
    [18]
    张伟. 煤矿用液压支架常见失效形式及其对策分析[J]. 煤矿开采,2017,22(6):22-25.

    ZHANG Wei. Analysis of failure mode and counter measure of hydraulic support in coal mine[J]. Coal Mining Technology,2017,22(6):22-25.
    [19]
    李博. 液压支架动载特性及疲劳寿命分析[D]. 太原: 太原理工大学, 2013.

    LI Bo. The analysis of dynamic load property and fatigue lifetime of hydraulic support[D]. Taiyuan: Taiyuan University of Technology, 2013.
    [20]
    全国各地区地磁场强度表[DB/OL]. [2022-07-21]. https://eduai.baidu.com/view/c2dbc2c10166f5335a8102d276a20029bd6463a0.

    Table of geomagnetic field strength in various regions of China [DB/OL]. [2022-07-21]. https://eduai.baidu.com/view/c2dbc2c10166f5335a8102d276a20029bd6463a0.
    [21]
    我国各地的磁偏角[DB/OL]. [2022-07-21]. https://eduai.baidu.com/view/7dabde0367ec102de3bd892b.

    Magnetic declination angles in various parts of China [DB/OL]. [2022-07-21]. https://eduai.baidu.com/view/7dabde0367ec102de3bd892b.
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