温度和激励磁场对磁巴克豪森跳跃平均体积的影响
The effect of temperature and excited magnetic field on the average volume ofmagnetic Barkhausen jump
摘 要
磁巴克豪森跳跃的平均体积（AVMBJ）ν是铁磁材料在激励磁场的影响下发生磁畴壁不可逆位移而产生的。就激励磁场及温度对其的影响进行研究：首先根据铁磁学，推导出不可逆磁导率和可逆磁化率的数值关系，并利用此关系对AVMBJ公式进行简化；其次利用铁磁性的“分子场”理论，推导了饱和磁化强度与温度和激励磁场的数值关系，以此得到温度和激励磁场强度与AVMBJ的理论关系；最后在不同温度和不同激励磁场下对Q235碳钢试样进行AVMBJ检测，验证了推导的理论关系。
温度
激励磁场
magnetic Barkhausen jump
temperature
excited magnetic field
Abstract
The average volume of the magnetic Barkhausen jump (AVMBJ)is generated by the irreversible displacement of the magnetic domain wall under the effect of the excited magnetic field on ferromagnetic materials. The effects of excited magnetic field and temperature on AVMBJ are studied in this paper. Firstly, according to ferromagnetism, the numerical relationships of irreversible magnetic permeability and reversible magnetic permeability are derived so that the mathematical expression of AVMBJ is simplified by that relationships. Secondly, the functional relationship between saturation magnetization and temperature is employed in this paper to deduce the explicit mathematical expression among AVMBJ, temperature, excited magnetic field by the ferromagnetic “molecular field” theory. Finally, the AVMBJs are measured under different temperatures and different excited magnetic fields to verify our theories.
中图分类号 TG115.28 DOI 10.11973/wsjc202006007
所属栏目 试验研究
基金项目 国家自然科学基金资助项目（51275029，60971019）
收稿日期 2019/9/3
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备注孙昊(1995-),男,硕士研究生,主要研究方向为基于磁巴克豪森信号的无损检测
引用该论文: SUN Hao,CHEN Juan,QI Xin. The effect of temperature and excited magnetic field on the average volume ofmagnetic Barkhausen jump[J]. Nondestructive Testing, 2020, 42(6): 32～35
孙昊,陈娟,祁欣. 温度和激励磁场对磁巴克豪森跳跃平均体积的影响[J]. 无损检测, 2020, 42(6): 32～35
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【3】丁松,田贵云,王平,等.巴克豪森应力检测中激励方式的影响[J].无损检测,2011,33(10):19-23.
【4】卢诚磊,倪纯珍,陈立功.巴克豪森效应在铁磁材料残余应力测量中的应用[J].无损检测,2005,27(4):176-178,182.
【5】郭贻诚.铁磁学(重排本)[M].北京:北京大学出版社,2014.
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【7】闫小明,王平,田贵云,等.室外温度变化对巴克豪森检测的影响[J].无损检测,2011,33(12):14-20.
【8】BOZORTH R M, DILLINGER J F. Barkhausen effect II. Determination of the average size of the discontinuites in magnetization[J]. Physical Review, 1930, 35(7):733-752.
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【10】张维諴,刘宜华,张连生,等.居里温度和饱和磁化强度测量方法的研究[J].物理测试,1999(2):45-48.
【11】傅洁,殷华宇,陈娟,等.基于巴克豪森效应的钢轨应力检测系统设计[J].电子测量与仪器学报,2013,27(5):403-408.
【12】邓雨, 尹亮, 陈娟,等. 基于磁巴克豪森信号的碳质量分数的无损评估方法[J]. 无损检测, 2018,40(1):37-42.
【13】DAS S K, JOARDER A, MITRA A. Magnetic barkhausen emissions and microstructural degradation study in 1.25Cr-0.50Mo steel during high temperature exposure[J]. NDT and E International,2004,37(3):243-248.
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