外磁场下三轴弱磁应力检测信号定量化分析
Quantitative analysis on triaxial weak magnetic stress detection signal under external magnetic field
摘 要
从微观角度量化分析了外磁场作用对铁磁性材料磁力学特性的影响因素,计算了不同方向及强度的外磁场下,铁磁性材料三轴弱磁信号的检测特性,并进行了系统的试验研究。试验结果表明:磁畴自发磁化强度矢量趋于应力方向重新排列产生弱磁信号;弱磁信号在轴向具有峰值,径向具有峰-峰值,且过零点,周向呈不规律波动;随外磁场强度的增强,弱磁信号增大,但增大幅度逐渐减小,外磁场对弱磁信号的影响趋于饱和;外界磁场对其垂直方向的弱磁信号影响程度微弱。
铁磁
磁畴
有限元
weak magnetic
ferromagnetic
magnetic domain
finite element
Abstract
This paper quantitatively analyzes the influence factors of the magnetic properties of the ferromagnetic material under the external magnetic field from a microscopic point of view, and calculates the three-axis weakening of the ferromagnetic material under the external magnetic field of different directions and strengths. The detection characteristics of the magnetic signal are studied and the system experiments are carried out. The research results show that: the spontaneous magnetization vector of the magnetic domain tends to rearrange in the direction of the stress to produce a weak magnetic signal; the weak magnetic signal has a peak in the axial direction and a peak-to-peak value in the radial direction, and at the zero crossing point, it fluctuates irregularly in the circumferential direction. The intensity of the magnetic field increases and the weak magnetic signal also increases, but the magnitude of the increment gradually decreases, and the influence of the external magnetic field on the weak magnetic signal tends to be saturated; the external magnetic field has a weak influence on the weak magnetic signal in the vertical direction.
中图分类号 TG115.28 DOI 10.11973/wsjc202205014
所属栏目 2021远东无损检测新技术论坛论文精选
基金项目
收稿日期 2021/12/15
修改稿日期
网络出版日期
作者单位点击查看
联系人作者张贺(634366317@qq.com)
备注张贺(1983-),男,博士研究生,主要研究方向为应力检测技术、无损检测技术及相关理论
引用该论文: ZHANG He,LIU Bin,WU Zihan,ZHANG Baoping,LIAN Zheng. Quantitative analysis on triaxial weak magnetic stress detection signal under external magnetic field[J]. Nondestructive Testing, 2022, 44(5): 64～70
张贺,刘斌,武梓涵,张保平,廉政. 外磁场下三轴弱磁应力检测信号定量化分析[J]. 无损检测, 2022, 44(5): 64～70
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