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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >A concentric-ring equivalent phased array method to model fields of large axisymmetric ultrasound transducers
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A concentric-ring equivalent phased array method to model fields of large axisymmetric ultrasound transducers

机译：大型轴对称超声换能器场建模的同心环等效相控阵方法

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摘要

An equivalent concentric-ring ultrasound phased array method was developed to estimate ultrasonic continuous wave fields generated by axisymmetric single-source transducers. The method models a given source as a concentric-ring phased array by mathematically segmenting it into many rings and subsequently finding the amplitude and phase for each ring that produces an acoustic field similar to the field of the single-source transducer. The excitation source of each ring was calculated using an inverse technique based on complex pressure measurements along a radial line close to the source. The predicting abilities of the method are evaluated by comparing measured and estimated ultrasound fields for six different transducers. The results show that the concentric-ring equivalent phased array method (CREPAM) is able to estimate quantitatively the ultrasound fields generated by large axisymmetric planar and focused transducers.
机译：开发了等效的同心环超声相控阵方法来估计由轴对称单源换能器产生的超声连续波场。该方法将给定源建模为同心环相控阵，方法是将其数学上分割成多个环，然后找到每个环的振幅和相位，从而产生类似于单源换能器的声场。每个环的激励源是使用逆技术基于沿靠近源的径向线的复杂压力测量值计算的。通过比较六个不同换能器的实测超声场和评估超声场，评估了该方法的预测能力。结果表明，同心环等效相控阵方法（CREPAM）能够定量估计由大型轴对称平面和聚焦换能器产生的超声场。

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