Practical Aspects of Making NAH Measurements University of Cincinnati

Format:

Conference/Event

Author/Creator:

Dumbacher, S. M., author.

Conference Name:

Noise & Vibration Conference & Exposition (1999-05-17 : Traverse City, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1999

Summary:

Practical issues to consider when making measurements for Nearfield Acoustical Holography (NAH) analysis are addressed. These include microphone spacing and placement from the test surface, number of microphones and array size, reference microphone number and placement, and filtering of the data.NAH has become an accepted analysis tool so that several commercial packages are available. Its application is limited to test surfaces that are fairly planar, lending itself well to tire testing, front of dash testing, engine face testing, et cetera In order to achieve accurate NAH results, the measurement and analysis process must be clearly understood on a practical level.Understanding the advantages and limitations of NAH and the measurement parameters required of it will allow the user to determine if NAH is applicable to a particular test object and environment

Notes:

Vendor supplied data

Publisher Number:

1999-01-1847

Access Restriction:

Restricted for use by site license