Wavelet Analysis of Vibration: Part 1—Theory

[+] Author and Article Information
D. E. Newland

Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, UK

J. Vib. Acoust 116(4), 409-416 (Oct 01, 1994) (8 pages) doi:10.1115/1.2930443 History: Received April 01, 1993; Online June 17, 2008


Wavelets provide a new tool for the analysis of vibration records. They allow the changing spectral composition of a nonstationary signal to be measured and presented in the form of a time-frequency map. The purpose of this paper, which is Part 1 of a pair, is to introduce and review the theory of orthogonal wavelets and their application to signal analysis. It includes the theory of dilation wavelets, which have been developed over a period of about ten years, and of harmonic wavelets which have been proposed recently by the author. Part II is about presenting the results on wavelet maps and gives a selection of examples. The papers will interest those who work in the field of vibration measurement and analysis and who are in positions where it is necessary to understand and interpret vibration data.

Copyright © 1994 by The American Society of Mechanical Engineers
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