摘要
金属磁记忆检测方法是一种能够对铁磁材料进行早期无损检测的新技术,其检测的是在外应力和地磁场的共同作用下铁磁构件产生的自发漏磁场.而磁机械效应则是指在恒定的外磁场环境中,磁化强度与外应力之间的变化关系.两者从本质上来讲是相似的.因此,磁记忆效应的物理本质就是弱磁场(地磁场)下的磁机械效应.针对磁机械效应经典的Jiles-Atherton理论模型,进行了系统、全面、完整的理论公式推导,分析了不同变量之间的物理关系和数学关系,并指出Jiles-Atherton理论模型存在的不足,并探讨了基于该模型进行的优化改进研究,改进的模型很好地解释了拉压应力作用下的非对称磁化行为.
The metal magnetic memory testing method is a new technique for early nondestructive testing of ferromagnetic materials,and it can be adopted to detect the spontaneous leakage magnetic field of ferromagnetic members under the combined action of external stress and geomagnetic field.The magneto-mechanical effect refers to the changing relationship between magnetization and stress in a constant external magnetic field,and the two are essentially similar.Therefore,the physical essence of the magnetic memory effect is the magneto-mechanical effect under a weak magnetic field(geomagnetic field).Aiming at the classical Jiles-Atherton model of magneto-mechanical effect,a systematic,comprehensive,and complete formula derivation is carried out to analyze the physical and mathematical relations between its internal different variables,and the shortcomings of the Jiles-Atherton model are pointed out.Finally,the improvement research based on theoretical model is discussed,and the improved model well explains the asymmetric magnetization behavior under tensile and compressive stress.
作者
苏三庆
刘馨为
王威
左付亮
邓瑞泽
秦彦龙
SU Sanqing;LIU Xinwei;WANG Wei;ZUO Fuliang;DENG Ruize;QIN Yanlong(School of Civil Engineering,Xi′an Univ.of Arch.&Tech.,Xi′an 710055,China)
出处
《西安建筑科技大学学报（自然科学版）》
北大核心
2024年第1期1-6,共6页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
国家自然科学基金面上项目(52378314,52278214)
陕西省自然科学基础研究计划重点基金(2022JZ-21)。
