New Evaluation Method on Gear Dynamics Using Continuous and Discrete Wavelet Transforms

[+] Author and Article Information
Yuji Ohue

Department of Intelligent Mechanical Systems Engineering, Kagawa University, Hayashi, Takamatsu, 761-0396, Japane-mail: ohue@eng.kagawa-u.ac.jp

Akira Yoshida

Department of Mechanical Engineering, Okayaya University, Tsushima-naka, Okayama, 700-8530, Japane-mail: akira-y@mech.okayama-n.ac.jp

J. Vib. Acoust 125(3), 274-281 (Jun 18, 2003) (8 pages) doi:10.1115/1.1547465 History: Received May 01, 2002; Revised September 01, 2002; Online June 18, 2003
Copyright © 2003 by ASME
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Chui, C. K., 1992, Introduction to Wavelet, Academic Press.
Mallat, S., 1998, A Wavelet Tour of Signal Processing, Academic Press.
Cohen, L., 1995, Time-Frequency Analysis, Prentice-Hall PTR.
Newland, D. E., 1993, Random Vibrations, Spectral & Wavelet Analysis, Longman Scientific & Technical.
Staszewski,  W. J., and Tomlinson,  G. R., 1994, “Application of the Wavelet Transform to Fault Detection in a Spur Gear,” Mech. Syst. Signal Process., 8(3), pp. 289–307.
Mori,  K., Kasashima,  N., Yoshioka,  T., and Ueno,  Y., 1996, “Prediction of Spalling on a Ball Bearing by Applying the Discrete Wavelet Transform to Vibration Signals,” Wear 195, pp. 162–168.
Yoshida,  A., Ohue,  Y., and Ishikawa,  H., 2000, “Diagnosis of Tooth Surface Failure by Wavelet Transform of Dynamic Characteristics,” Tribol. Int., 33, 273–279.
JSME Research Group on Accuracy and Design in Gears, 1977, Rep. Fujita, K., Research Report on Accuracy and Design in Gears, RC-SC38, JSME, in Japanese.


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Power circulating gear testing machine and measurement system of dynamic performance of gear pair
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Scaling and wavelet functions based on cardinal B-spline In order of m=4
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Dynamic and static tooth stresses
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Shapes and dimensions of gear pair
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Tooth profile errors of gear pair
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Relation between dynamic load ration and n2
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Tooth root strain, WT map and FFT at n2=1800 rpm
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Two main frequencies contained in tooth root strain
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Decomposed tooth root strain
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Reconstructed tooth root strains
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Conventional and new dynamic load ratios
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Example of decomposed vibration of gear box
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Root-mean-square of vibration acceleration above and below fz
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Root-mean-square of sound pressure above and below fz



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