Nearfield Acoustic Holography (NAH) can be used to identify the sources of intermittent contact. In this study, a seat belt retractor is exposed to a random vibration and the resulting noise is measured with an array of microphones. Acoustic ray back-tracing is used to determine the area distribution of surface velocities at the seat belt retractor and better understand the nature of the internal noise sources.
Source Identification Using Nearfield Acoustic Holography Applied to a Seat Belt Retractor
Sae Technical Papers
SAE 2005 Noise and Vibration Conference and Exhibition ; 2005
2005-05-16
Aufsatz (Konferenz)
Englisch
Acoustic imaging using nearfield holography
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