Monitoring extremely slow rolling element bearings: part I
Monitoring extremely slow rolling element bearings: part I
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DOI：
10.1016/s0963-8695(02)00005-1
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发表时间：
2002-09-01
影响因子：
4.2
通讯作者：
Mba, D
中科院分区：
文献类型：
--
作者：
Jamaludin, N;Mba, D
最成熟的监测滚动轴承完整性的技术是振动分析。然而，在转速低于2 rpm的极低转速下，由于传统的振动采集设备无法测量工作的基频，因此监测滚动轴承的健康状况充满了困难。此外，部件在如此低速下的损坏并不一定表现出振动特征的明显变化，本文提出了高频声发射(AE)作为检测极慢滚动轴承机械完整性丧失的早期阶段的方法的研究，在这种情况下为1.1rpm。产生声发射的机制是轴承内机械完整性丧失的匹配部件的摩擦作用，例如，滚子在损坏的外圈上的摩擦作用。详细的调查集中在轴承试验台上，局部表面缺陷是由火花侵蚀造成的，此外，本文第二部分给出了在运行轴承上成功应用的证据。(C)2002爱思唯尔科学有限公司。保留所有权利。
The most established technique for monitoring the integrity of rolling element bearings is vibration analysis. However, at extremely slow rotational speeds of less than 2 rpm, monitoring the health of rolling element bearings is fraught with difficulty since conventional vibration acquisition equipment is not capable of measuring the fundamental frequency of operation. Furthermore, component distress at such low speeds does not necessarily show an obvious change in vibration signature,This paper presents a study of high frequency acoustic emission (AE) as a means of detecting early stages of loss of mechanical integrity in extremely slow rolling element bearings, in this instance 1.1 rpm. The mechanism for AE generation was the rubbing action of mating components that were experiencing loss of mechanical integrity within the bearing, for instance, the rubbing action of a roller on a damaged outer race. Investigations detailed were centred on a bearing test-rig onto which localised surface defects were seeded by spark erosion, In addition, evidence of successful application on an operational bearing is presented in part II of this paper. (C) 2002 Elsevier Science Ltd. All rights reserved.