...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>NDT & E international >Fourier-transformed eddy current technique to visualize cross-sections of conductive materials
【24h】

Fourier-transformed eddy current technique to visualize cross-sections of conductive materials

机译：傅立叶变换涡流技术可视化导电材料的横截面

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A pulsed eddy current NDE system is useful for detecting deep flaws in conductive materials. We have developed a pulsed eddy current NDE system using a magneto-resistive sensor. The induction coil generates a pulsed magnetic field which has a frequency component between 0 and 3 kHz, and a maximum amplitude of about 4 μT. Aluminum plates with flaws at depths of 1 and 2 mm were measured, and the intrinsic frequency responses of the plates were obtained using a proposed Fourier transformation method. Cross-sectional images of the samples could then be directly constructed from the intrinsic responses. We also demonstrated estimation of quantitative values for the depths of flaws. The estimated depth was well defined for a sample with a flaw at a depth of 2 mm. The estimated value was slightly different for a sample with a flaw at a depth of 1 mm due to lack of frequency components above 3 kHz. These results indicate that the proposed system is a very promising tool for NDE tomography.
机译：脉冲涡流NDE系统可用于检测导电材料中的深层缺陷。我们使用磁阻传感器开发了脉冲涡流NDE系统。感应线圈产生一个脉冲磁场，其频率分量在0到3 kHz之间，最大振幅约为4μT。测量了在1和2 mm深度处有缺陷的铝板，并使用提出的Fourier变换方法获得了板的固有频率响应。然后可以从固有响应中直接构建样本的横截面图像。我们还演示了缺陷深度定量值的估计。对于在2毫米深度处有缺陷的样品，可以很好地定义估计深度。由于缺少高于3 kHz的频率分量，在1mm深度有缺陷的样品的估计值略有不同。这些结果表明，所提出的系统是用于NDE层析成像的非常有前途的工具。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号