Abstract: Ultrasonic pules-echo method is applied to study the defects of metal adhesive bonds in this paper. Feature analysis and pattern recognition techniques are used to analysize and classify the defects of adhesive bends and the results are satisfactory. Finally, It is presented in the paper that high speed data acquisition unit must be developed in order to realize the real-time testing.

Key words: 超声检验, 胶接接头, 模式识别, 缺陷