声发射技术及在旋转机械碰摩故障诊断中的应用

声发射技术及在旋转机械碰摩故障诊断中的应用:旋转机械转静部件之间的碰摩是运行中的常见故障，也是急待解决的重大研究课题。声发射以其灵敏度高、频响范围宽、信息量大、动态检测等特点为碰摩检测提供了一条新的途径，也是近年来旋转机械碰摩故障诊断研究领域的研究热点。本文综述了声发射技术的发展现状和信号分析方法，提出了当前仍存在的问题和今后的研究方向。
关键字：声发射；碰摩故障；诊断；

Abstract: Rub-impact in rotary machinery is a frequent fault between rotor and stator which becomes the urgent problem waiting to be solved in present. The acoustic emission (AE) technology provide a new approach to rub-impact fault diagnosis because of its characteristics of high sensitivity, wide frequency response range, large quantity and dynamic detection. In this paper, the development situation and the signal analysis methods of AE technology are reviewed, then, the existing problem and the future research direction are proposed.
Key words: acoustic emission; rub-impact fault; diagnosis;