• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Tomographic imaging of an ultrasonic field in a plane by use of a linear array: theory and experiment
【24h】

Tomographic imaging of an ultrasonic field in a plane by use of a linear array: theory and experiment

机译：使用线性阵列对平面中的超声场进行层析成像：理论和实验

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

Quantitative ultrasonic characterization of inhomogeneous and anisotropic materials is often difficult due to undesired phenomena such as beam steering and phase aberration of the insonifying field. We introduce a method based on tomographic reconstruction techniques for the visualization of an ultrasonic field using a linear array rotated in a plane. Tomographic reconstruction of the ultrasonic field is made possible through the phase-sensitive nature of the tall, narrow piezoelectric elements of a linear array that act as parallel line integrators of the pressure field. We validate the proposed imaging method through numerical simulations of propagated ultrasonic fields based upon the angular spectrum decomposition technique. We then demonstrate the technique with experimental measurements of two textile composites and a reference water path. We reconstruct images of the real and imaginary parts of a transmitted 2 MHz ultrasonic field that are then combined to reconstruct images of the power and unwrapped phase. We also construct images of the attenuation and phase shift for several regions of the composites. Our results demonstrate that tomographic imaging of an ultrasonic field in a plane using a rotated linear array can potentially improve ultrasonic characterization of complex materials.
机译：由于不希望的现象，例如光束转向和声场的相差，通常难以对非均质和各向异性材料进行定量超声表征。我们介绍了一种基于层析重建技术的方法，用于使用在平面中旋转的线性阵列对超声场进行可视化。通过线性阵列的高而窄的压电元件的相敏特性，可以对超声场进行断层成像重建，该压电元件充当压力场的平行线积分器。我们通过基于角谱分解技术的传播超声场的数值模拟来验证所提出的成像方法。然后，我们用两种纺织品复合材料和参考水路的实验测量值来演示该技术。我们重建传输的2 MHz超声场的实部和虚部的图像，然后将其组合以重建功率和未包裹相位的图像。我们还构建了复合材料几个区域的衰减和相移图像。我们的结果表明，使用旋转的线性阵列对平面中的超声场进行层析成像可以潜在地改善复杂材料的超声表征。

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