起重运输机械Issue(9)：9-13,5.
交流磁场检测技术基础问题的仿真分析
摘要
Abstract
The AC field measurement technology (ACFM) is a new kind of electromagnetic testing method in recent years,which is used to perform early evaluation for damages of metal components through field disturbance caused by cracks on the surface of pieces under test,representing a major future development trend of the nondestructive testing field.The paper analyzes the fundamental principle of AC field measurement,with the simulation model built based on the finite element technology.According to ACFM simulation study,the correspondence between testing signal characteristics and size parameters of cracks on test-pieces is researched,as well as the effect of detecting frequency,lifting height,and material features (such as permeability and conductivity) and other factors on the detection sensitivity,with some critical conclusions worked out,providing a basis for deep research and wide application of the detecting technology.关键词
无损检测/涡流检测/漏磁检测/交流场检测/有限元仿真Key words
nondestructive testing/eddy current testing/magnetic flux leakage testing/AC field measurement/finite element simulation分类
矿业与冶金引用本文复制引用
程秋平,刘志云,任尚坤,李兵..交流磁场检测技术基础问题的仿真分析[J].起重运输机械,2014,(9):9-13,5.基金项目
国家自然科学基金项目（51261023）、国家质检总局科技计划项目 （）
