• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2020, Vol. 56 ›› Issue (4): 25-34.doi: 10.3901/JME.2020.04.025

• 仪器科学与技术 • 上一篇    下一篇

铁磁性材料早期疲劳损伤磁混频检测方法

焦敬品1, 常予1, 李光海2, 吴斌1, 何存富1   

  1. 1. 北京工业大学机械工程与应用电子技术学院 北京 100124;
    2. 中国特种设备检测研究院 北京 100013
  • 收稿日期:2019-04-08 修回日期:2019-10-23 出版日期:2020-02-20 发布日期:2020-04-23
  • 通讯作者: 焦敬品(通信作者),女,1973年出生,博士,教授,博士研究生导师。主要研究方向为现代测控技术与方法、无损检测新技术、现代信号分析与处理技术、新型传感器技术。E-mail:jiaojp@bjut.edu.cn
  • 作者简介:常予,女,1991年出生,博士研究生。主要研究方向为电磁混频无损检测技术与方法。E-mail:changyu8023@163.com
  • 基金资助:
    国家重点研发计划(2017YFF0209703)和国家自然科学基金(11527801,11572010)资助项目。

Magnetic Mixing Detection Method for Early Fatigue Damage of Ferromagnetic Materials

JIAO Jingpin1, CHANG Yu1, LI Guanghai2, WU Bin1, HE Cunfu1   

  1. 1. College of Mechanical Engineering and Application Electronics Technology, Beijing University of Technology, Beijing 100124;
    2. China Special Equipment Inspection and Research Institute, Beijing 100013
  • Received:2019-04-08 Revised:2019-10-23 Online:2020-02-20 Published:2020-04-23

摘要: 在金属材料常见的早期力学性能退化损伤中,疲劳对结构的潜在危害性最大。基于铁磁性材料的磁滞非线性特性,在高低频叠加励磁条件下,研究铁磁材料中磁混频效应的产生机理及表现形式。分析混频分量和局部磁滞回线与材料早期损伤的关系,提出磁混频非线性因子与局部磁滞损耗幂律系数两种特征参量用于铁磁性材料磁混频效应的表征。在此基础上,将磁混频检测技术用于铁磁性材料疲劳损伤检测。结果表明,提出的两种磁混频特征参量可用于铁磁性材料早期疲劳损伤的表征。为铁磁性材料早期疲劳损伤检测提供了可行的技术方案。

关键词: 铁磁性材料, 疲劳损伤, 磁混频, 磁滞非线性, 幂律系数

Abstract: Among the common early mechanical property degradation damage of metal materials, fatigue has the greatest potential harm to the structure. Based on the hysteresis nonlinearity of ferromagnetic materials, the mechanism and manifestation of magnetic frequency mixing effect in ferromagnetic materials under high and low frequency excitation are analyzed. The relationship between the mixing component, the local hysteresis loops and the early damage of magnetic ferromagnetic materials is analyzed. The magnetic mixing nonlinear factor and the power law coefficient of local hysteresis loss are proposed to characterize the magnetic frequency mixing effect of ferromagnetic materials. Then, magnetic frequency mixing detection technology is used to detect fatigue damage of ferromagnetic materials. Experimental results show that the early fatigue damage of ferromagnetic materials can be characterized by two kinds of magnetic mixing characteristic parameters. This research work provides a feasible technical scheme for early fatigue damage detection of ferromagnetic materials.

Key words: ferromagnetic material, fatigue, magnetic mixing frequency, magnetic nonlinear, power law coefficient

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