...Bovic Kilundu; Xavier Chiementin; Pierre Dehombreux In this work, singular spectrum analysis is employed to process vibration signals resulting from rolling bearings. A monitoring indicator is defined from the fact that the structure of a signal recorded from a bearing becomes more complex when...

... classification accuracy of 97% was obtained over a range of rotating speeds. 08 07 2010 30 10 2010 09 09 2011 09 09 2011 fault diagnosis feature extraction materials testing neural nets pattern classification rolling bearings vibrations Rotating machineries are probably...

... in both macrogeometry and microgeometry of the surface. Definition of defect ratio in the rolling bearings Defect ratio D can be defined as the ratio of shaft rotation angle in which a ball is in contact to the defective area to the angle between two consecutive balls. The definition...

.... finite element analysis frequency-domain analysis gears mechanical contact rolling bearings shafts vibrations 01 01 2010 27 09 2010 06 04 2011 06 04 2011 2011 American Society of Mechanical Engineers ...

...Shumin Hou; Yourong Li; Zhigang Wang; Ming Liang The resonance demodulation technique has been widely used to detect rolling bearing faults based on the signal acquired by piezoelectric accelerometers. However, this method is ineffective in extremely low speed applications due to the instrument...

... and levels. 31 10 2008 28 08 2009 20 11 2009 fault diagnosis feature extraction rolling bearings vibrations feature extraction weighted K nearest neighbor combination rolling element bearing fault diagnosis A rolling element bearing is one of the essential components...

... 2009 20 11 2009 acoustic emission acoustic emission testing acoustic measurement deformation rolling bearings structural acoustics vibrations acoustic emission rolling element bearing condition monitoring autocorrelation function parameter analysis Rotating machinery...

...Khalid F. Al-Raheem; Asok Roy, Ph.D.; K. P. Ramachandran, Ph.D.; D. K. Harrison; Steven Grainger, Ph.D. A new technique for an automated detection and diagnosis of rolling bearing faults is presented. The time-domain vibration signals of rolling bearings with different fault conditions...

... comparative results between AE and vibration diagnosis. acoustic emission condition monitoring cracks rolling bearings vibrations A specially designed test rig that encouraged the natural damage condition of a test bearing was employed. To speed up crack initiation, a combination of a thrust...

... . 13 03 2007 03 12 2007 03 04 2008 adaptive systems fault diagnosis feature extraction filtering theory fuzzy neural nets genetic algorithms Hilbert transforms inference mechanisms locomotives mechanical engineering computing pattern classification rolling bearings...

...Ruqiang Yan; Robert X. Gao This paper presents a signal decomposition and feature extraction technique for the health diagnosis of rotary machines, based on the empirical mode decomposition. Vibration signal measured from a defective rolling bearing is decomposed into a number of intrinsic mode...

... balancing position. Numerical results indicate that the ball-rod-spring balancer may possess a larger stable region of the perfect balancing position compared to the traditional fixed-orbit balancer. 14 11 2005 16 04 2007 ball bearings rolling bearings disc drives optical disc storage...

... sizes on outer rings and inner rings of ball bearings. 07 09 2006 19 03 2007 fatigue condition monitoring ball bearings rolling bearings wavelet transforms vibrations crack detection demodulation wavelet mechanical shock response modal analysis vibratory analysis...

... on Vibration and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS . Manuscript received October 2002; final revision June 2004. Associate Editor: Lawrence A. Bergman. 01 October 2002 01 June 2004 21 12 2004 flaw detection ultrasonic materials testing rolling bearings...

..., Grant No. ECS-9906218. vibrations structural acoustics fault diagnosis flaw detection induction motors hidden Markov models feature extraction rolling bearings 10 05 2002 23 09 2004 2005 American Society of Mechanical Engineers ...