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Waveguide Microwave Imaging: Solids Volume Fraction of Particulate Materials

机译:波导微波成像:颗粒材料的固体体积分数

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摘要

An original modeling-based microwave imaging technique for determining the volume fraction of solid material in dielectric powders is described. The desired characteristic is determined by analyzing S-parameter measurements in a waveguide containing the sample with the help of an artificial neural network trained by data from 3D FDTD simulation. The powder sample is represented by a mixture of air and millimeter-scale particles reproduced in the FDTD model. Computational tests with 20 to 40 mm cubic samples of SiC and ZrO2 powders in WR340 show that the solids volume fraction is determined with less than 5% error.
机译:描述了一种基于建模的原始微波成像技术,用于确定介电粉末中固体材料的体积分数。通过借助包含3D FDTD模拟数据训练的人工神经网络,分析包含样本的波导中的S参数测量值,即可确定所需的特性。粉末样品由FDTD模型中复制的空气和毫米级颗粒的混合物表示。用WR340中的20至40 mm的SiC和ZrO2粉末立方样品进行的计算测试表明,确定的固体体积分数误差小于5%。

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