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ECOLE SUPÉRIEURE D'ÉLECTRICITÉ Une grande école d'ingénieurs au cœur des sciences de l'information,de l'énergie et des systèmes |
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Conference papers
Enhanced visual analysis of aircraft engines based on spectrograms
Abstract : Detection of damaged bearings in aircraft engines by visual analysis of vibration spectrograms has proven its efficiency. Enhancement of this visual analysis can be achieved by data processing of the spectrograms. The data processing flow presented in this paper is composed of three successive steps: i) individual statistical normalization of the wideband noise (background noise of the spectrogram), ii) elimination of 'sane' narrowband vibration using a determinist parametrical model, and iii) elimination of residual 'sane' vibration using a statistical model whose parameters have been estimated from a database of 'sane' engine. This 3-step procedure has been tested on a set of vibration data from aircraft engines and the results are discussed.
Cited literature [3 references]
https://hal-supelec.archives-ouvertes.fr/hal-01103775
Contributor : Alexandra Siebert Connect in order to contact the contributor
Submitted on : Thursday, January 15, 2015 - 1:34:53 PM
Last modification on : Monday, December 14, 2020 - 12:38:07 PM
Long-term archiving on: : Thursday, April 16, 2015 - 10:40:20 AM
Contributor : Alexandra Siebert Connect in order to contact the contributor
Submitted on : Thursday, January 15, 2015 - 1:34:53 PM
Last modification on : Monday, December 14, 2020 - 12:38:07 PM
Long-term archiving on: : Thursday, April 16, 2015 - 10:40:20 AM
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