发展了一种基于超声检测原理的颗粒两相体系颗粒粒度、密度和浓度的测量方法。设计了一套脉冲超声波多参数测量装置和系统，以SiC悬浊液为研究对象，测得了其3—6MHz的声衰减谱。利用反演算法，获得了SiC颗粒粒度分布曲线，并将此与电感应法测量结果进行对比，两者比较吻合。同时，采用多次回波技术，获得了多达15次回波信号。利用自行编制的LabVIEW分析程序进行数据处理，计算出颗粒两相体系的密度和浓度，其相对测量误差分别在1．6％和8％以内。
Based on ultrasonic measurements, a method of measuring particle size, density and concentration of particle two-phase system has been developed. An apparatus and system have been designed and then established. The 3-6 MHz attenuation spectrum of SiC suspension has been acquired and the particle size distribution has been determined by inversion algorithm. In order to make a comparison, measurement results of Coulter analysis have been given and it shows that they match very well. Meanwhile, a signal comprising 15 echoes has been obtained with the multi-echo technique. Finally, the density and concentration has been measured based on the analysis of the multi-echo signal with the LabVIEW program developed by authors. And the relative errors of density and concentration are within 1.6% and 8% respectively.
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