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国外文献 > 1.轴承 > 2. 轴承类型与部件 > 滚动轴承

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标 题： A COMPARATIVE STUDY OF THE VIBRATION AND ACOUSTIC EMISSION TECHNIQUES TO DETECT EARLY STAGE DAMAGE OF ROLLING ELEMENT BEARINGS
滚动元件轴承早期损伤检测振动与声发射技术的比较研究
作 者： Yibo Edward Fan
Fengshou Gu
Andrew Ball
关键词： Vibration  [振动]
Acoustic Emission (AE)  [ 声发射（AE）]
Rolling Element Bearing  [ 滚动轴承]
Envelope Analysis  [ 信封分析]
Early Stage Damage  [ 早期阶段损伤]
出版年： 2005
文集名： Condition Monitoring 2005
状态监测 2005
会议名： 2005 International Conference on Condition Monitoring
2005年国际状态监测会议
届 次：
摘 要： Vibration analysis is the most well-established technique for the fault diagnosis of rolling element bearings. However, acoustic emission (AE) is often thought to be more sensitive for the detection of early stage damage. This paper presents an experimental investigation to compare the ability of the two techniques by simulating different degrees of damage in the outer race of roller bearings. High frequency sampling and data-streaming techniques were applied in the measurement of AE, rather than such traditionally measured AE parameters as the counts, events, and peak amplitude of the signal etc. By processing the AE signals with advanced digital computing methods, it was found that their frequencies coincided with the best frequency range for vibration envelope analysis. This indicated that the early stage defects, which could be detected by acoustic emission, could also be detected by vibration envelope analysis. Acoustic emission technique was not more sensitive than vibration method. However, AE signals relating to the fault could be identified more easily because of their high signal-to-noise ratio.

振动分析是滚动轴承故障诊断中最成熟的技术。然而，声发射（AE）通常被认为在检测早期损伤方面更为灵敏。本文通过模拟滚子轴承外圈不同程度的损伤，开展实验研究，比较两种技术的检测能力。在声发射测量中采用了高频采样和数据流技术，而非传统上使用的信号计数、事件数和峰值振幅等参数。通过对声发射信号采用先进的数字计算方法进行处理，发现其频率与振动包络分析的最佳频段一致。这表明，声发射可检测到的早期缺陷，同样可通过振动包络分析来识别。声发射技术的灵敏度并不高于振动方法。但由于其信噪比高，与故障相关的声发射信号更容易被识别。
中文内容为网络AI翻译，专业术语未必准确，仅供参考。

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