Through the effectiveness anal ysis of typical experimental data,the au thors find a new method to use the modif ied BP ANN to accurately recognize the e ffective AE signals from experimental da ta.

• 最终确定用改进的多层前向误差反传网络 (BP)对声发射信号进行定量化有效性识别的新方法 ,该方法能够很好地区分出声发射实验数据中的有效信号。