轴承故障诊断中的声发射检测技术

摘要

声发射技术是自20世纪60年代开始,到目前逐步成熟的一种无损检测技术.声发射以其灵敏度高、频响范围宽、信息量大和动态检测等特点,为轴承检测和故障诊断提供了一条新的途径,也是近年来轴承故障诊断研究领域的热点.综述了国内外声发射技术在滚动轴承和滑动轴承检测中的应用.通过分析,总结出轴承声发射检测技术下一步的研究方向,并指出轴承故障的声发射检测是振动检测的有力补充工具,特别是在轴承低转速和故障早期的检测中更能发挥作用.%Acoustic emission technique (AET) is a progressive mature nondestructive testing method which began in 1960s.The AET provide a new approach to the testing and failure diagnosis of bearing because of its characteristics of high sensitivity, wide frequency response range, large quantity and dynamic detection.And it is also the bearing fault diagnosis area of research focus in recent years.The application of acoustic emission technique in the world and China in the rolling and sliding bearings detection was reviewed.By analyzing the acoustic emission detection of bearing, the future research direction was concluded, and it indicated that acoustic emission detection of bearing failure was a powerful supplementary tool for vibration testing, especially in the bearing failure of low speed and better early detection role.