铁磁构件金属磁记忆效应仿真与试验  

Simulation and Experimental Study of the Ferromagnetic Metal Magnetic Memory Effect

作　　者：李龙军[1] 王晓锋[1] 杨宾峰[1] 张辉[2] 崔文岩[1] 

机构地区：[1]空军工程大学信息与导航学院,西安710077 [2]空军工程大学科研部,西安710051

出　　处：《无损检测》2012年第12期37-40,64,共5页Nondestructive Testing

基　　金：国家自然科学基金资助项目(51107149);陕西省自然科学基础研究计划资助项目(2011JQ6010)

摘　　要：针对目前金属磁记忆检测技术只能定性地确定应力集中区的位置,无法对应力集中区进行定量评估的问题,在研究外界载荷与构件表面应力分布关系的基础上,给出了构件处于弹性阶段时应力与磁导率之间的数值关系,并构建了金属磁记忆的检测系统,试验研究了外加载荷、提离及扫描路径对构件表面空间金属磁记忆信号的影响,研究结果为推进金属磁记忆的定量化研究奠定了基础。The metal magnetic memory（MMM） testing technology can only be qualitatively determine the location of the stress concentration zone, but can not quantitatively evaluate the stress concentration. On the basis of studying of the relationship between the external load and surface stress distribution, this paper derived the numerical relationship between stress and magnetic permeability of the elastic stage of the component, constructed the metal magnetic memory testing system, and studied the influence of the load, lift off and the scan path on the magnetic memory signals. The results laid the foundation for advancing the quantitative study of metal magnetic memory.

关 键 词：磁记忆检测 应力集中区 定量评估 仿真分析 

分 类 号：TG115.28[金属学及工艺—物理冶金]