Finite Element Numerical Simulation on Steel Pipe Using Pulsed Magnetic Flux Leakage Testing
-
摘要: 漏磁检测方法作为一种无损检测技术广泛应用于钢材等的检测。分析了脉冲漏磁检测原理, 提出了脉冲交流磁化方式。采用有限元法对系统参数变化等影响缺陷漏磁场分布因素进行了仿真计算, 分析了提离、缺陷深度及宽度等变化对脉冲漏磁检测结果的影响。结果表明在较大提离情况下, 脉冲漏磁检测方法具有可提取较多检测信息、输出电压幅值高的优点, 在钢管的缺陷检测中将有广阔的应用前景。Abstract: Magnetic flux leakage techinique had been widely used for non-intrusively testing of steel products.The principle of pulsed magnetic flux leakage testing(PMFL) was analyzed. A pulsed alternating current magneting method was presented. The finite element numerical simulation had been used to simulate and calculate the effects on various of parameter of the detection system. The influences of changes of lift-off, defect depth and length of the pulsed magnetic field leakage were studied by way of finite element numerical simulation. The results showed that PMFL had the advantage of high signal amplitude and more useful testing information, and this making the method had the broad using foreground in the testing of steel pipe.
-
-
[1] 徐章遂, 徐英, 王建斌, 等.裂纹漏磁定量检测原理与应用[M].北京: 国防工业出版社, 2005. [2] 任吉林, 林俊明, 高春法.电磁检测[M].北京: 机械工业出版社, 2000. [3] Tianlu Chen, Gui YunTian, Ali Sophian, et al. Feature extraction and selection for defect classification of pulsed eddy current NDT[J]. NDT & E International, 2008, 41(6): 467-476. [4] Huang Zuoying, Que Peiwen, Chen Liang. 3D FEM analysis in mengnetic flux leakage method[J]. NDT & E International, 2006, 39(1): 61-66. [5] 唐莺, 郭希玲, 潘孟春, 等.不同参量对缺陷交变漏磁场影响的仿真及验证[J].无损检测, 2008, 30(9): 577-579.
计量
- 文章访问数: 5
- HTML全文浏览量: 0
- PDF下载量: 2