Enhanced visual analysis of aircraft engines based on spectrograms - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2014

Enhanced visual analysis of aircraft engines based on spectrograms

Résumé

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.
Fichier principal
Vignette du fichier
ISMA_2014.pdf (1.17 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01103775 , version 1 (15-01-2015)

Identifiants

  • HAL Id : hal-01103775 , version 1

Citer

Julien Griffaton, José Picheral, Arthur Tenenhaus. Enhanced visual analysis of aircraft engines based on spectrograms. ISMA2014, Sep 2014, Leuven, Belgium. pp.2809-2822. ⟨hal-01103775⟩
135 Consultations
203 Téléchargements

Partager

Gmail Facebook X LinkedIn More