作者：祖瑞丽, 任尚坤, 段振霞, 赵珍燕

作者单位：南昌航空大学 无损检测技术教育部重点实验室, 江西 南昌 330063

关键词：无损检测;附加环境磁场;力磁耦合关系;磁化状态变化量;定量检测

摘要：

为研究磁场对铁磁试件力磁信号分布规律的影响，对不同附加环境磁场下的45#钢试件进行静载拉伸试验，检测试件表面的磁记忆信号B的大小，并对试件在不同附加环境磁场下的力磁耦合关系进行分析讨论。试验结果表明：在磁场环境作用下B随应力增大而增大，在屈服点附近达到最大值，此后各点B值基本保持稳定；附加环境磁场并未改变力磁信号的变化规律，但可增加磁记忆信号的大小数值，且磁化状态变化量D随着附加环境磁场的增大而增大，当H为240 A/m时达到最大，随后开始减小；在塑性变形阶段，力磁信号表现为先减小后增大的磁化反转现象。故附加环境磁场不影响金属磁记忆技术的定性评价，但影响定量评价，因此可用磁记忆检测技术来判断铁磁试件的力磁耦合特征，对金属磁记忆定量检测的进一步研究具有重要意义。

Study on the influence of magnetic field on force-magnetic coupling relationship of ferromagnetic specimen

ZU Ruili, REN Shangkun, DUAN Zhenxia, ZHAO Zhenyan

Key Laboratory of Nondestructive Testing of Ministry of Education, Nanchang Hangkong University, Nanchang 330063, China

Abstract: In order to study the effect of magnetic field on the distribution law of force-magnetic signal in ferromagnetic specimen,static tensile test is carried out on 45^# steel specimens under different additional environmental conditions to examine the size of the magnetic memory signal on the surface of the test specimen and analyze and discuss the force-magnetic coupling relationship of the specimen under different additional magnetic fields.The results show that,under the action of magnetic field,the magnetic memory signal B increases with the increase of stress,it reaches the maximum value near the yield point,and then the magnetic memory signal B is basically stable.The additional environmental magnetic field does not change the variation law of the force-magnetic signal,but it can increase the magnitude of the magnetic memory signal,and the change of the magnetization state D increases with the increase of the additional environmental magnetic field.It reaches the maximum value when H is 240 A/m,and then begins to decrease.In the plastic deformation stage,the force-magnetic signal shows the magnetization reversal phenomenon that it decreases first and then increases.So the additional environmental magnetic field does not affect the qualitative evaluation of metal magnetic memory technology,but affects the quantitative evaluation.Therefore,magnetic memory detection technology can be used to judge the force-magnetic coupling characteristics of ferromagnetic specimen,which is of great significance for the further study of quantitative detection of metal magnetic memory.

Keywords: nondestructive testing;additional environmental magnetic field;force-magnetic coupling relationship;magnetic state change;quantitative detection

2017, 43(10): 127-133  收稿日期: 2017-03-20;收到修改稿日期: 2017-04-28

基金项目: 国家自然科学基金（51261023）

作者简介: 祖瑞丽(1993-),女,河南商丘市人,硕士研究生,专业方向为金属磁记忆检测。

参考文献

[1] WILSON J W, TIAN G Y, BARRANS S. Residual magnetic field sensing for stress measurement[J]. Sensors & Actuators A Physical,2007,135(2):381-387.
[2] YANG E, LI L M, CHEN X. Magnetic field aberration induced by cycle stress[J]. Journal of Magnetism and Magnetic Materials,2007,312(1):72-77.
[3] 任吉林,王东升,宋凯,等. 应力状态对磁记忆信号的影响[J]. 航空学报,2007,28(3):724-728.
[4] 任吉林,刘海朝,宋凯. 金属磁记忆检测技术的兴起与发展[J]. 无损检测,2016,38(11):7-15.
[5] LENG J C, XING H Y, ZHOU G Q, et al. Dipole modelling of metal magnetic memory for V-notched plates[J]. Insight:Non-Destructive Testing and Condition Monitoring,2013,55(9):498-503.
[6] LIORZOU F, PHELPS B, ATHRETON D L. Macroscopic models of magnetization[J]. IEEE Transactions on Magnetics,2000,36(2):418-428.
[7] LI C, DONG L, WANG H, et al. Metal magnetic memory technique used to predict the fatigue crack propagation behavior of 0.45%C steel[J]. Journal of Magnetism & Magnetic Materials,2016(405):150-157.
[8] KOLOKOLNIKOV E, DUBOV A, STEKLOV O. Asses-sment of welded joints stress-strain state inhomogeneity before and after post weld heat treatment based on the metal magnetic memory method[J]. Welding in the World, 2016,60(4):1-8.
[9] DUBOV A A, KOLOKOLNIKOV M S. Assessment of the material state of oil and gas pipelines based on the metal magnetic memory method[J]. Welding in the World,2012,56(3-4):11-19.
[10] DUBOV A A. Principle features of metal magnetic memory method and inspection tools as compared to known magnetic NDT methods[C]//World Conference on Nondestructive Testing,2006:1034-1037.
[11] JILES D C, LI L. A new approach to modeling the magneto-mechanical effect[J]. Journal of Applied Physics, 2004,95(11):7085-7060.
[12] JILES D C. Theory of the magnetomechanical effect[J]. Journal of Physics D Applied Physics,1995,28(8):1537-1546.
[13] 常福清,刘东旭,刘峰. 铁磁材料应力-磁化性能的相关性[J]. 燕山大学学报,2011,35(3):277-282.
[14] 冷建成. 基于磁记忆技术的铁磁性材料早期损伤诊断方法研究[D]. 哈尔滨:哈尔滨工业大学,2012.
[15] 冷建成,徐敏强,邢海燕. 铁磁构件磁记忆检测技术的研究进展[J]. 材料工程,2010(11):88-93.
[16] 邱忠超,张卫民,果艳,等. 弱磁激励下Q235钢的磁记忆检测[J]. 无损检测,2014,36(11):6-10.
[17] 张卫民,邱忠超,袁俊杰,等. 关于利用金属磁记忆方法进行应力定量化评价问题的讨论[J]. 机械工程学报,2015,51(8):9-13.
[18] 钟力强,李路明. 检测环境磁场对磁记忆方法评价应力集中的影响[C]//第四届十三省区市机械工程学会科技论坛暨2008海南机械科技论坛,2009.
[19] 任尚坤,杨雅玲,林天华,等. 环境磁场对20钢应力-磁效应的影响[J]. 理化检验(物理分册),2008(8):401-404.
[20] 王正道,姚凯,沈恺,等. 金属磁记忆检测技术研究进展及若干讨论[J]. 实验力学,2012,27(2):129-139.
[21] 李喆. 外界磁场对铁磁性材料金属磁记忆检测影响的研究[D]. 沈阳:沈阳工业大学,2015.