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| 钢管磁特性对涡流检测信号影响的仿真研究 | |
| 引用本文： | 宋凯,康宜华,张路根,孙燕华.钢管磁特性对涡流检测信号影响的仿真研究[J].华中科技大学学报(自然科学版),2011,39(10):10-13. |
| 作者姓名： | 宋凯 康宜华 张路根 孙燕华 |
| 作者单位： | 1. 华中科技大学机械科学与工程学院,湖北武汉430074／南昌航空大学无损检测技术教育部重点实验室,江西南昌330063 2. 华中科技大学机械科学与工程学院,湖北武汉,430074 3. 江西省锅炉压力容器检验检测研究院,江西南昌,330029 |
| 基金项目： | 江西省自然科学基金资助项目(2009GQC0106); 江西省质量监督局基金资助项目(GZJK200902) |
| 摘 要： | 基于ANSYS有限元软件,建立了钢管饱和磁化下的涡流检测数值计算模型,研究构件磁导率特性与涡流检测信号的作用机制.鉴于ANSYS软件的谐波分析模块中不能同时施加交直流激励的限制,提出了一种处理磁导率的等效方法——EMP法,将涡流检测交直流激励的非线性模型简化为交流激励的线性模型.采用EMP法计算了钢管磁化后的磁导率、涡... |
| 关 键 词： | 涡流检测 钢管 饱和磁化 等效磁导率 涡流 线圈阻抗 |
Simulation of the effects of magnetic properties of steel pipes on ECT signals |
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| Song Kai, Kang Yihua Zhang Lugen Sun Yanhua,Nanchang Hangkong University,Nanchang , The Inspection , Research Institute of Boiler , Pressure Vessel of Jiangxi Province,Nanchang ,China.Simulation of the effects of magnetic properties of steel pipes on ECT signals[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011,39(10):10-13. | |
| Authors: | Song Kai Kang Yihua Zhang Lugen Sun Yanhua Nanchang Hangkong University Nanchang The Inspection Research Institute of Boiler Pressure Vessel of Jiangxi Province Nanchang China |
| Institution: | Song Kai1,2 Kang Yihua1 Zhang Lugen3 Sun Yanhua1(1 College of Mechanical Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China,2 Key Laboratory of Nondestructive Test(Ministry of Education),Nanchang Hangkong University,Nanchang 330063,3 The Inspection and Research Institute of Boiler and Pressure Vessel of Jiangxi Province,Nanchang 330029,China) |
| Abstract: | Eddy current testing(ECT) model of the steel pipe with direct current(DC) saturation magnetization was developed using ANSYS software.Formation mechanism of magnetic permeability properties and ECT signal on component were studied.Because of limitation of ANSYS software on loading,a new equivalent magnetic permeability(EMP) method was presented.Based on this method,the nonlinear finite element model with AC and DC exciting could be simplified as the linear with alternating current(AC) exciting for ECT.Furth... |
| Keywords: | eddy current testing(ECT) steel pipe saturation magnetization equivalent magnetic permeability(EMP) eddy current coil impedance |
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