运用声发射技术检测DF_4型机车通风机轴承故障

Adopting acoustic emission technique to detect the failure of bearing of DF_4 locomotive ventilator

分析了DF4型机车通风机轴承破损原因,介绍了AE轴承检测仪声发射技术的基本原理、应用方法和应用效果。

The reasons for the failure of bearing of DF_4 locomotive ventilator are analysed.The basic principle of acoustic emission technique adopted to AE bearing detector,the usage and the application result are presented in this article.