涡流穿过式传感器实际渗透深度的数学模型  

MATHEMATIC MODEL FOR THE TRUE PENETRATING DEPTH OF EDDY CURRENT FEED-THROUGH PROBE

作　　者：游凤荷[1] 郭文婷[2] 

机构地区：[1]武汉理工大学测控系,武汉430070 [2]华中科技大学信息学院,武汉430074

出　　处：《无损检测》2003年第5期225-228,共4页Nondestructive Testing

摘　　要：采用直接测量固态导体内部磁场分布的方法 ,研究影响穿过式传感器实际渗透深度的各种因素。结果表明 ,实际渗透深度除与导体的电导率、磁导率及测试频率有关外 ,还与线圈的结构及激励磁场有关。最后利用遗传算法建立了涡流实际渗透深度的数学模型 。The factors affecting the true penetrating depth (TPD) of eddy current probe were studied by directly measuring the distribution of the magnetic field inside a solid conductor. Results indicated that TPD was relevant to the shape of coil and stimulating magnetic field in addition to the electrical conductivity and magnetic permeability of a conductor as well as the testing frequency. The model established by genetic algorithm was expected to provide a reliable criterion for the TPD of eddy current inside a solid conductor.

关 键 词：涡流检验 渗透深度 数学模型 涡流穿过式传感器 

分 类 号：TG115.28[金属学及工艺—物理冶金] TH878[金属学及工艺—金属学]