Vibration analysis is a powerful diagnostic tool for rotating machinery problems. Traditional approaches to vibration signature analysis have focused on the Fourier transform, which tends to average out transient effects. Recent work in the area of wavelets has allowed for the characterization of signals in frequency and in time, which, if properly interpreted, can provide substantial insight, particularly with regard to transient behaviors. There are many different wavelets, but the harmonic wavelet was developed specifically for vibration analysis. It uses an algorithm based upon the FFT, which makes it particularly attractive to many in the vibration analysis community. This paper considers the harmonic wavelet as a tool for extracting transient patterns from measured vibration data. A method for characterizing transient behaviors using the harmonic wavelet is described and illustrated using simulation and experimental results.
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ASME Turbo Expo 2001: Power for Land, Sea, and Air
June 4–7, 2001
New Orleans, Louisiana, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7853-8
PROCEEDINGS PAPER
A Harmonic Wavelets Approach for Extracting Transient Patterns From Measured Rotor Vibration Data
Valeta Carol Chancey,
Valeta Carol Chancey
Duke University, Durham, NC
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George T. Flowers,
George T. Flowers
Auburn University, Auburn, AL
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Candice L. Howard
Candice L. Howard
Auburn University, Auburn, AL
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Valeta Carol Chancey
Duke University, Durham, NC
George T. Flowers
Auburn University, Auburn, AL
Candice L. Howard
Auburn University, Auburn, AL
Paper No:
2001-GT-0241, V004T03A008; 8 pages
Published Online:
July 30, 2014
Citation
Chancey, VC, Flowers, GT, & Howard, CL. "A Harmonic Wavelets Approach for Extracting Transient Patterns From Measured Rotor Vibration Data." Proceedings of the ASME Turbo Expo 2001: Power for Land, Sea, and Air. Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award. New Orleans, Louisiana, USA. June 4–7, 2001. V004T03A008. ASME. https://doi.org/10.1115/2001-GT-0241
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