Vibration-based fault diagnostic of a spur gearbox

Hartono, Dennis and Halim, Dunant and Roberts, Gethin Wyn and Liu, Qianyu (2016) Vibration-based fault diagnostic of a spur gearbox. MATEC Web of Conferences, 70 . 02004/1-02004/5. ISSN 2261-236X

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Abstract

This paper presents comparative studies of Fast Fourier Transform (FFT), Short Time Fourier Transform (STFT) and Continuous Wavelet Transform (CWT) as several advanced time-frequency analysis methods for diagnosing an early stage of spur gear tooth failure. An incipient fault of a chipped tooth was investigated in this work using vibration measurements from a spur gearbox test rig. Time Synchronous Averaging was implemented for the analysis to enhance the clarity of fault feature from the gear of interest. Based on the experimental results and analysis, it was shown that FFT method could identify the location of the faulty gear with sufficient accuracy. On the other hand, Short Time Fourier Transform method could not provide the angular location information of the faulty gear. It was found that the Continuous Wavelet Transform method offered the best representation of angle-frequency representation. It was not only able to distinguish the difference between the normal and faulty gearboxes from the joint angle-frequency results but could also provide an accurate angular location of the faulty gear tooth in the gearbox.

Item Type: Article
Schools/Departments: University of Nottingham Ningbo China > Faculty of Science and Engineering > Department of Civil Engineering
University of Nottingham Ningbo China > Faculty of Science and Engineering > Department of Mechanical, Materials and Manufacturing Engineering
Identification Number: 10.1051/matecconf/20167002004
Depositing User: LIN, Zhiren
Date Deposited: 20 Oct 2017 13:04
Last Modified: 20 Oct 2017 13:11
URI: http://eprints.nottingham.ac.uk/id/eprint/47360

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