【作者】 邓艾东； 高亹； 赵力；

【Author】 DENG Ai-dong,GAO Wei,ZHAO Li (National Engineering Research Center of Turbo-generator Vibration,Southeast university,Nanjing 210096)

【机构】 东南大学火电机组振动国家工程研究中心；

【摘要】 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。本文研究了声发射信号的计数检测法和能量分析法,分析了这两种方法的特点和性能。更多还原

【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,and is a hotspot in the filed of diagnosing the rub-impact in rotary machinery.In this paper,the methods of counter detection and energy analysis are investigated and the performance and character are analyzed..更多还原