The acoustic emission characterization of gear systems is a key issue in several mechanical fields aiming at improving sound quality and diagnostic features. The possibility of identifying contribution of different vibro-acoustic sources would help on tackling that objective. A Time Domain Correlation method based on simultaneously collected acoustic and vibration data is exploited for separating the acoustic contribution coming from the different components of a three epicyclical gear electric motor. Two different approaches of the Scanning Laser Doppler Vibrometry are discussed for measuring vibration data: the Continuous Scan one, where the laser sweep continuously the surface under test simultaneously providing temporal and spatially sampled data, and the Standard Sequential Scan. A comparison between the proposed method and another noise source separation approach named Selective Intensity (already discussed in previous works) is also presented.

Spatial noise component identification based on different vibro-acoustic data sets

REVEL, Gian Marco;M. Martarelli;CHIARIOTTI, PAOLO
2012-01-01

Abstract

The acoustic emission characterization of gear systems is a key issue in several mechanical fields aiming at improving sound quality and diagnostic features. The possibility of identifying contribution of different vibro-acoustic sources would help on tackling that objective. A Time Domain Correlation method based on simultaneously collected acoustic and vibration data is exploited for separating the acoustic contribution coming from the different components of a three epicyclical gear electric motor. Two different approaches of the Scanning Laser Doppler Vibrometry are discussed for measuring vibration data: the Continuous Scan one, where the laser sweep continuously the surface under test simultaneously providing temporal and spatially sampled data, and the Standard Sequential Scan. A comparison between the proposed method and another noise source separation approach named Selective Intensity (already discussed in previous works) is also presented.
2012
Proceedings of the 30th IMAC
9781461424185
Laser Doppler Vibrometry
Acoustic Intensity
Vibroacoustic measurements
File in questo prodotto:
File Dimensione Formato  
76_rev.pdf

Accesso riservato

: Publisher’s version
Dimensione 411.66 kB
Formato Adobe PDF
411.66 kB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1237771
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? ND
social impact