冲压速度对冲压成形工艺影响很大, 为此利用声发射技术来检测不同速度下的冲压过程。以不同速度下的冲压过程产生的声发射信号幅度为研究对象, 研究两者之间的关系。结果表明, 冲压速度对冲压成形过程中产生的声发射信号幅度影响非常大。即随着速度的增大, 声发射信号幅度随之增大。

The speed of drawing has an important influence on drawing, so it can detect the process of drawing in different speeds by using acoustic emission testing technique. The purpose of this experiment is different amplitude of acoustic emission signals are studied in various velocities in the process of acoustic emission, through signals we can research that the relation of different kinds of friction-motion speed and amplitude of acoustic emission signal. The results showed that the speed of drawing has an important influence on amplitude of acoustic emission signal in the process of drawing. So it is concluded that with the aggrandizement of speed, amplitude of acoustic emission signals increases.