| Relationship between magnetic Barkhausen noise and the stresses,the hardness and the phase content of ferromagnetic materials |
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| 作者姓名： | 祁欣 侯志灵 田建龙 |
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| 作者单位： | Dept.ofPhysicsandElectronics,BeijingUniversityofChemicalTechnology,Beijing100029,China |
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| 基金项目： | SponsoredbytheMinistryofEducation’sTechnicalResearchEmphasesFundandFormerMachineryIndustryMinistry’sTechnicalDevelopmentPlan
SustentationSubject. |
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| 摘 要： | Magnetic Barkhausen Noise (MBN) is a phenomenon of electromagnetic energy emission due to the movement of magnetic domain walls inside ferromagnetic materials when they are locally magnetized by an alternating magnetic field. According to Faraday’s law of electromagnetic induction, the noise can be received by the coil attached to the surface of the material being magnetized and the noise carries the message of the eharaeteristies of the material such as stresses, hardness, phase content, etc. Based on the characteristic of the noise, research about the relationship between the welding stresses in the welding assembly and the noise, the fatigue damage of the plate structure and the noise, and the influence of heat treatment and the variation of phase content to the noise are carried out in this paper.
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| 关 键 词： | 磁性材料 铁磁体 巴克豪森效应 噪音 磁畴 A／D转换 |
Relationship between magnetic Barkhausen noise and the stresses, the hardness and the phase content of ferromagnetic materials |
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| QI Xin,HOU Zhi-ling,TIAN Jian-long.Relationship between magnetic Barkhausen noise and the stresses,the hardness and the phase content of ferromagnetic materials[J].Journal of Harbin Institute of Technology,2005,12(1):67-70. |
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| Authors: | QI Xin HOU Zhi-ling TIAN Jian-long |
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| Abstract: | Magnetic Barkhausen Noise (MBN) is a phenomenon of electromagnetic energy emission due to the movement of magnetic domain walls inside ferromagnetic materials when they are locally magnetized by an alternating magnetic field. According to Faraday's law of electromagnetic induction, the noise can be received by the coil attached to the surface of the material being magnetized and the noise carries the message of the characteristics of the material such as stresses, hardness, phase content, etc. Based on the characteristic of the noise, research about the relationship between the welding stresses in the welding assembly and the noise, the fatigue damage of the plate structure and the noise, and the influence of heat treatment and the variation of phase content to the noise are carried out in this paper. |
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| Keywords: | barkhausen noise magnetic domain ferromagnetic material |
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