Online condition monitoring of axial-flow turbomachinery blades using rotor-axial Eulerian laser Doppler vibrometry

被引：39
|
作者：
Oberholster, A. J. [1 ]
Heyns, P. S. [1 ]
机构：
[1] Univ Pretoria, Dept Mech & Aeronaut Engn, Dynam Syst Grp, ZA-0002 Pretoria, South Africa
来源：
MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2009年 / 23卷 / 05期
关键词：
Online blade condition monitoring; Eulerian laser Doppler vibrometry; Tracking laser Doppler vibrometry; Non-harmonic Fourier analysis; Phase angle trends; VIBRATION MEASUREMENT SYSTEM;
D O I：
10.1016/j.ymssp.2009.01.001
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The ability to monitor the vibration of blades online is of great importance to the structural health of turbomachinery. This paper focuses on the fixed reference frame or Eulerian implementation of laser Doppler vibrometry to perform this function. The way in which this measurement technique works is studied analytically and then a numerical simulation approach is proposed. Through experimental testing and finite element modeling, it is shown that this measurement approach is in principle viable for online blade condition monitoring when phase angles at reference frequencies are monitored, using non-harmonic Fourier analysis. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1634 / 1643
页数：10
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