一种检测金属电导率的新方法  

A New Method for Testing Metallic Conductivity

作　　者：王新掌[1] 雷银照[1] 

机构地区：[1]郑州工业大学电气信息工程学院,河南郑州450002

出　　处：《郑州工业大学学报》2001年第2期62-64,共3页Journal of Zhengzhou University of Technology

基　　金：河南省科技攻关项目 (97190 16 0 0 )

摘　　要：针对目前国内外金属电导率检测仪器必须由标准试块标定 ,且检测对象限制在所给标准试块的电导率范围内的状况 ,从理论上提出了一种检测金属电导率的新方法 ,即根据已知的散射场阻抗值 ,采用数值计算法反推出金属的电导率 ,以克服现有金属电导率检测仪器必须采用标准试块标定的局限性 ,扩大了被检测材料的范围 ,研制出实验性的电导率检测仪器 .使用该仪器进行的实验表明 ,该检测方法可行 ,检测仪器可靠 .Now apparatus used for testing metallic conductivity abroad and home must be demarcated by reference material tested. Moreover, the object tested by the apparatus is confined to the range of metal given reference material tested. In order to overcome these limitations and enlarge the range of material tested, a new method that according to the known impedance value of scattered field, metallic conductivity is calculated conversely by numerical method is put forward theoretically in the paper. On the basis of this method, a apparatus testing metallic conductivity is developed experimentally. The experiment done by use of the developed apparatus proves that the testing method in the paper is feasible and the corresponding experimental apparatus testing metallic conductivity is reliable

关 键 词：电导率 非铁磁性金属 无损检测 散射阻抗值 数值计算法 导电能力 

分 类 号：TM934.16[电气工程—电力电子与电力传动]