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Vibration‐ and acoustic‐emissions based novelty detection of fretted bearings

Jordan McBain (Bharti School of Engineering, Laurentian University, Sudbury, Canada)
Greg Lakanen (Bharti School of Engineering, Laurentian University, Sudbury, Canada)
Markus Timusk (Bharti School of Engineering, Laurentian University, Sudbury, Canada)

Journal of Quality in Maintenance Engineering

ISSN: 1355-2511

Article publication date: 24 May 2013

Abstract

Purpose

The purpose of this paper is to examine the use of a new feature reduction technique with novelty detection on vibration and acoustic‐emission sensors monitoring bearings mounted in the test benches of automotive manufacturers.

Design/methodology/approach

Signals from standard accelerometers and acoustic‐emission sensors were gathered from bearings operating under steady conditions on an accessory‐drive test bench. The bearings under test were subject to a variety of faults including fretting. These signals were processed and reduced to standard feature vectors, the dimensionality of which was reduced using a new principal‐component‐like technique optimized for novelty detection. The reduced data were analyzed with a novelty detection technique called the Support Vector Data Descriptor.

Findings

The classification results from these sensors, after being reduced with the proposed feature reduction technique, are substantially improved over those achievable with only standard novelty detection; nearly zero‐percent classification error was achieved.

Research limitations/implications

The feature reduction technique depends, in part, on the availability of the fault type in question – potentially violating the normal novelty detection assumption of limited abnormal data. This may require the manufacturer to gather real or simulated fault data prior to running tests.

Practical implications

Incipient faults may be detectable at a much earlier stage in a manufacturer's component failure analysis. Test engineers may use this technique to reliably automate the fault detection process and enable improved root‐cause analysis through the earlier identification of faults.

Originality/value

The application of the feature reduction technique will provide manufacturers and researchers with a new means of improving fault detection in machinery components.

Keywords

Citation

McBain, J., Lakanen, G. and Timusk, M. (2013), "Vibration‐ and acoustic‐emissions based novelty detection of fretted bearings", Journal of Quality in Maintenance Engineering, Vol. 19 No. 2, pp. 181-198. https://doi.org/10.1108/13552511311315977

Publisher

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Emerald Group Publishing Limited

Copyright © 2013, Emerald Group Publishing Limited