Use of high frequency analysis of acoustic emission signals to determine rolling element bearing condition
Use of high frequency analysis of acoustic emission signals to determine rolling element bearing condition
复制标题
使用声发射信号的高频分析来确定滚动元件轴承状况
DOI：
10.1088/1742-6596/628/1/012074
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Cockerill A
中科院分区：
文献类型：
--
作者：
Cockerill A
利用声发射传感器对外滚道上人工缺陷的圆柱滚子轴承进行了信号检测。SKF N204ECP滚子轴承放置在两个SKF 22202E型双列球面滚子轴承之间，负载在0.29和1.79 kN之间。速度恒定在5780rpm。高频分析允许通过确定随着人工缺陷尺寸的增加而增加的系统结构共振来洞察轴承的状况。当施加更高的载荷时，激发出约100kHz的频率，这表明AE的释放可能归因于摩擦和塑性变形，因为通过滚道的雕刻引起的峰值被压平和磨损。AE对轴承中该水平的敏感性表明该技术在寿命测试期间检测轴承失效的早期阶段的潜力。
Acoustic Emission (AE) sensors were used to detect signals arising from a cylindrical roller bearing with artificial defects seeded onto the outer raceway. An SKF N204ECP roller bearing was placed between two double row spherical roller bearings, type SKF 22202E, and loaded between 0.29 and 1.79 kN. Speed was constant at 5780rpm. High frequency analysis allowed insight into the condition of the bearings through the determination of an increase in the structural resonances of the system as the size of an artificial defect was increased. As higher loads were applied, frequencies around 100kHz were excited, indicating the release of AE possibly attributed to friction and the plastic deformation as peaks, induced through engraving of the raceway, were flattened and worn down. Sensitivity of AE to this level in bearings indicates the potential of the technique to detect the early stages of bearing failure during life tests.