A new method for performance degradation assessment of solid lubricated bearings

Author

Zhang, Chao ; Wang, Shaoping

Author_Institution

Sch. of Autom. Sci. & Electr. Eng., Beihang Univ., Beijing, China

fYear

2011

fDate

21-23 June 2011

Firstpage

387

Lastpage

390

Abstract

Solid lubricated bearing is a key component in spacecrafts and various other applications. Its performance degradation assessment is very important due to the demand of high reliability of aeronautic products. In this paper, a new method consists of wavelet packet decomposition and improved fuzzy c-means is proposed. The vibration signal of tested bearings is decomposed and one node is used to reconstruct the original signal. Then the energy of the reconstructed signal is calculated and the subjection of the energy to normal state is used as performance degradation indicator. Improved fuzzy c-means is used to calculate the subjection matrix. After the test, several tested bearings are observed with an scanning electron microscope.

Keywords

fuzzy set theory; lubrication; machine bearings; mechanical engineering computing; mechanical testing; reliability; scanning electron microscopy; signal reconstruction; vibrations; wavelet transforms; aeronautic product; improved fuzzy c-means; performance degradation assessment; reliability; scanning electron microscope; signal reconstruction; solid lubricated bearing; spacecraft; subjection matrix; vibration signal decomposition; wavelet packet decomposition; Clustering algorithms; Degradation; Films; Lubricants; Solids; Vibrations; Wavelet packets; Improved fuzzy c-means; SEM; Solid lubricated bearing; Wavelet packet decomposition;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications (ICIEA), 2011 6th IEEE Conference on

Conference_Location

Beijing

ISSN

pending

Print_ISBN

978-1-4244-8754-7

Electronic_ISBN

pending

Type

conf

DOI

10.1109/ICIEA.2011.5975614

Filename

5975614