Browse Publications Technical Papers 2005-01-2500
2005-05-16

Source Identification Using Nearfield Acoustic Holography Applied to a Seat Belt Retractor 2005-01-2500

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.

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