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The Radiated Sound Field of Electromagnetic Acoustic Probe

机译：电磁声探头的辐射声场

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摘要

The characteristic of radiated sound field excitated within a non-ferromagnetic aluminum by the electromagnetic acoustic probe consisting of circle-spiral coil and vertical bias magnetic field is studied. This article presents an improved force source model according to the principle of electromagnetic induction. Then the analytic displacement solution of wave field produced by that force source model is deduced. The tangential and normal directivity of shear wave and longitudinal wave are calculated numerically and compared with experimental results. Experimental results conforms well to the theoretical prediction, which not only shows that the electromagnetic acoustic probe of this conformation has a good directivity of vertical shear-wave radiation, but also confirms the given force source model is effective to describe the actual physical behavior of the probe. Theoretical and experimental study lays a foundation for the optimized design and engineering application of the electromagnetic acoustic probe.
机译：研究了由圆螺旋线圈和垂直偏置磁场组成的电磁声探头在非铁磁铝中激发的辐射声场的特性。本文根据电磁感应原理提出了一种改进的力源模型。然后推导了该力源模型产生的波场的解析位移解。数值计算了剪切波和纵波的切向和法向方向，并与实验结果进行了比较。实验结果与理论预测吻合良好，不仅表明该构型的电磁声探头具有良好的垂直横波辐射方向性，而且证实了给定的力源模型能有效地描述实际的物理行为。探测。理论和实验研究为电磁声探头的优化设计和工程应用奠定了基础。

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  • 来源
  • 会议地点 Beijing(CN);Beijing(CN)
  • 作者

    Qiuying Chen; Xiaomin Wang; Mingxuan Li; Jie Mao;

  • 作者单位

    State key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,P.R.China;

    State key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,P.R.China;

    State key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,P.R.China;

    State key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,P.R.China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 声学;声学;
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