TRANSMISSION NOISE REDUCTION USING HOLOGRAPHIC SOURCE IDENTIFICATION AND CONSTRAINED LAYER DAMPING

Format:

Conference/Event

Author/Creator:

Hera, Ronald W., author.

Conference Name:

1979 Automotive Engineering Congress and Exposition (1979-02-26 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1979

Summary:

As the noise of various vehicle components is reduced, transmission noise will become more apparent. Most transmission noise is generated by vibration of the transmission housing caused in turn by meshing of gear teeth. To effectively reduce airborne noise eminating from the housing, the critical areas of the housing that act as speakers must be identified.A photographic technique using laser light, called Double-Pulsed Holography, has been adapted for this purpose. A five-step test program has been successfully completed and has resulted in a quieter prototype through use of constrained layer damping materials at critical points on the transmission housing. Thus, it is expected that holography will be a very useful tool in locating housing areas which are the source of airborne noise

Notes:

Vendor supplied data

Publisher Number:

790363

Access Restriction:

Restricted for use by site license