聲發(fā)射技術及在旋轉機械碰摩故障診斷中的應用:旋轉機械轉靜部件之間的碰摩是運行中的常見故障，也是急待解決的重大研究課題。聲發(fā)射以其靈敏度高、頻響范圍寬、信息量大、動態(tài)檢測等特點為碰摩檢測提供了一條新的途徑，也是近年來旋轉機械碰摩故障診斷研究領域的研究熱點。本文綜述了聲發(fā)射技術的發(fā)展現(xiàn)狀和信號分析方法，提出了當前仍存在的問題和今后的研究方向。
關鍵字：聲發(fā)射；碰摩故障；診斷；

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;