Effect of the Denoising on Acoustic Emission Signals

被引：19

作者：

Chiementin, X. ^{[1
]}

Mba, D. ^{[2
]}

Charnley, B. ^{[2
]}

Lignon, S. ^{[1
]}

Dron, J. P. ^{[1
]}

机构：

[1] Univ Reims, GRESPI, F-51687 Reims 2, France

[2] Cranfield Univ, Sch Engn, Turbomachinery Grp, Cranfield MK43 0AL, Beds, England

来源：

JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME | 2010年 / 132卷 / 03期

关键词：

acoustic emission; condition monitoring; denoising; DWT; SANC; spectral subtraction; rolling bearing; ROLLING-ELEMENT BEARINGS; SPECTRAL SUBTRACTION; WAVELET SHRINKAGE; DEFECTS; NOISE;

D O I：

10.1115/1.4000789

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The acoustic emission (AE) technology is growing in its applicability to bearing defect diagnosis. Several publications have shown its effectiveness for earlier detection of bearing defects than vibration analysis. In the latter instance, detection and monitoring of defects can be achieved through temporal statistical indicators, which can further be improved by application of denoising techniques. This paper investigates the application of temporal statistical indicators for AE detection of bearing defects on a purposely built test-rig and assesses the effectiveness of various denoising techniques in improving sensitivity to early defect detection. It is concluded that the denoising methods offer significant improvements in identifying defects with AE, especially the self-adaptive noise cancellation method. [DOI: 10.1115/1.4000789]

引用

页码：0310091 / 0310099

页数：9

共 28 条

[1] Observations of changes in acoustic emission waveform for varying seeded defect sizes in a rolling element bearing [J].