A comparative study on damage detection in speed-up and coast-down process of grinding spindle-typed rotor-bearing system

被引：59

作者：

Kim, B. S.

Lee, S. H. ^{[1
]}

Lee, M. G.

Ni, J.

Song, J. Y.

Lee, C. W.

机构：

[1] Ajou Univ, Sch Mech Engn, Suwon 443749, South Korea

[2] Univ Michigan, SM Wu Mfg Res Ctr, Ann Arbor, MI 48109 USA

[3] Korean Inst Machinery & Mat, Intelligent & Precis Machine Dept, Taejon 305343, South Korea

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2007年 / 187卷

关键词：

damage detection; speed-up and coast-down process; vibration signal-based monitoring; non-stationary signal processing method; rotor-bearing system;

D O I：

10.1016/j.jmatprotec.2006.11.222

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the damage detection from non-stationary mechanical vibration signals collected during acceleration and deceleration was performed. A laboratory grinding spindle-typed rotor-bearing system was equipped, and modal testing was carried out to identify system characteristics and operating range. Time-frequency analysis method such as Fast Fourier Transform (FFT), Short-Time Fourier Transform (STFT), Wigner-Ville Distribution (WVD), and Discrete Wavelet Transform (DWT) was applied to vibration data of normal rotor and shaft-cracked rotor in speed-varying process and the results of feature extraction from shaft-cracked condition were also compared with those in normal condition. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：30 / 36

页数：7

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