Acoustic emissions diagnosis of rotor-stator rubs using the KS statistic

被引:46
作者
Hall, LD [1 ]
Mba, D [1 ]
机构
[1] Cranfield Univ, Sch Mech Engn, Cranfield MK43 0AL, Beds, England
关键词
D O I
10.1016/S0888-3270(03)00050-5
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Acoustic emission (AE) measurement at the bearings of rotating machinery has become a useful tool for diagnosing incipient fault conditions. In particular, AE can be used to detect unwanted intermittent or partial rubbing between a rotating central shaft and surrounding stationary components. This is a particular problem encountered in turbines used for power generation. For successful fault diagnosis, it is important to adopt AE signal analysis techniques capable of distinguishing between various types of rub mechanisms. It is also useful to develop techniques for inferring information such as the severity of rubbing or the type of seal material making contact on the shaft. It is proposed that modelling the cumulative distribution function of rub-induced AE signals with respect to appropriate theoretical distributions, and quantifying the goodness of fit with the Kolmogorov Smirnov (KS) statistic, offers a suitable signal feature for diagnosis. This paper demonstrates the successful use of the KS feature for discriminating different classes of shaft-seal rubbing. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:849 / 868
页数:20
相关论文
共 17 条
[1]  
Anastassopoulos A. A., 1995, Journal of Acoustic Emission, V13, P11
[2]  
Bentley P. G., 1988, Journal of Acoustic Emission, V7, P59
[3]  
Board DB, 2000, AEROSP CONF PROC, P79, DOI 10.1109/AERO.2000.877885
[4]  
CHAN RWY, 1985, J ACOUSTIC EMISSION, V4, P115
[5]   Application of acoustic emission technique for the detection of defects in rolling element bearings [J].
Choudhury, A ;
Tandon, N .
TRIBOLOGY INTERNATIONAL, 2000, 33 (01) :39-45
[6]  
HOLROYD TJ, 1993, BRIT J NONDESTR TEST, V35, P75
[7]   SPECTRUM ANALYSIS - A MODERN PERSPECTIVE [J].
KAY, SM ;
MARPLE, SL .
PROCEEDINGS OF THE IEEE, 1981, 69 (11) :1380-1419
[8]  
LI CJ, 1989, ASME, V111, P331
[9]   LINEAR PREDICTION - TUTORIAL REVIEW [J].
MAKHOUL, J .
PROCEEDINGS OF THE IEEE, 1975, 63 (04) :561-580
[10]  
Mba D, 1999, P I MECH ENG E-J PRO, V213, P153, DOI 10.1243/0954408991529906