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	Application of acoustic emission technique in diagnosis of early rolling bearing faults - art. no. 64234L
	Hao, Rujiang ; Lu, Wenxiu ; Chu, Fulei
	2010-05-10 ; 2010-05-10
会议名称	INTERNATIONAL CONFERENCE ON SMART MATERIALS AND NANOTECHNOLOGY IN ENGINEERING, PTS 1-3 ; International Conference on Smart Materials and Nanotechnology in Engineering ; Harbin, PEOPLES R CHINA ; Web of Science
关键词	fault diagnosis rolling bearing acoustic emission wavelet transform Engineering, Aerospace Engineering, Mechanical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Optics
中文摘要	In this paper, the early fault acoustic emission signals of rolling bearing are investigated by means of continuous wavelet transform. Morlet wavelet is selected and the wavelet parameters are optimized based on the principle of minimal wavelet entropy. A new method termed as generalized soft-threshold de-noising is used to filter the wavelet transform coefficients. The de-noised signals obtained by reconstructing the wavelet coefficients contain the obvious impulsive characteristics, and the frequency of the impulse interval is equal to the rolling bearing fault characteristic frequency. Based on the optimized waveform parameters, the wavelet scalogram is used to analyze the real AE signal of rolling bearing in experimental test rig. The results indicate that the proposed method is useful and efficient.
会议录出版者	SPIE-INT SOC OPTICAL ENGINEERING ; BELLINGHAM ; 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/19435]
专题	清华大学
推荐引用方式 GB/T 7714	Hao, Rujiang,Lu, Wenxiu,Chu, Fulei. Application of acoustic emission technique in diagnosis of early rolling bearing faults - art. no. 64234L[C]. 见:INTERNATIONAL CONFERENCE ON SMART MATERIALS AND NANOTECHNOLOGY IN ENGINEERING, PTS 1-3, International Conference on Smart Materials and Nanotechnology in Engineering, Harbin, PEOPLES R CHINA, Web of Science.

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