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RESEARCH PAPERS: Gas Turbines: Structures and Dynamics

Vibration of a Rotor System With a Switching Crack and Detection of the Crack

[+] Author and Article Information
G. T. Zheng

P.O. Box 137, Dept. of Astronautics and Applied Mechanics, Harbin, Institute of Technology, Harbin, China

J. Eng. Gas Turbines Power 120(1), 149-154 (Jan 01, 1998) (6 pages) doi:10.1115/1.2818068 History: Received October 01, 1997; Online November 19, 2007

Abstract

The existence of a “breathing” crack can not only cause variations in harmonic components but also produce extra transient components into vibration signals of a rotor system. In the present paper, the composition of cracked rotor vibration signals is studied first by some analytical methods. Based on this study, an approach of signal processing is suggested to detect transient components of the vibration signals and thereby the crack.

Copyright © 1998 by The American Society of Mechanical Engineers
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