基于加权欧氏距离的陶瓷器超声波辨识方法

为克服陶瓷器鉴定传统方法的局限性，提出一种基于加权欧氏距离的陶瓷器超声波辨识方法.以三个完全相同的方形陶瓷盒子作为实验样品，根据样品的断面扫描电镜照片，分析超声波波长与其内部颗粒尺寸之间的关系；提取10MHz超声波在样品内部的背向散射信号，计算各样品与标准样品的背向散射信号间的加权欧式距离，与事先留存的标准样品自身的加权欧氏距离进行比较.计算结果表明，不同样品之间的加权欧式距离不同.利用背向散射信号的加权欧氏距离，可以快速、准确地辨识陶瓷器样品.

Identification of Ceramic Using Ultrasonic Pulses Based on the Weighted Euclidean Distance

In order to overcome the limitation of the traditional method of ceramic identification,an ultrasonic identification method based on the weighted Euclidean distance is proposed.Three ceramic boxes with the same outline dimensions as experimental samples,the relationships between ultrasonic wave length and the particle size of ceramic are analyzed according to cross-section SEM photographs of the ceramic,the weighted Euclidean distances between standard sample and other samples are calculated by extracting 10MHz ultrasonic backscattering signals,and compared to the self-weighted Euclidean distance of the standard sample.The calculated results show that the weighted Euclidean distance between different samples is different.Using the weighted Euclidean distance of the backscatter signal,the ceramic sample can be identified quickly and accurately.