A Comparative Study on Sound Transmission Loss and Absorption Coefficient of Acoustical Materials Univ. of Michigan-Dearborn

Format:

Conference/Event

Author/Creator:

Cherng, Cherng, author.

Contributor:

Ebbitt, Gordon

Mohanty, Pravansu

Xi, Qian

Conference Name:

SAE 2011 Noise and Vibration Conference and Exhibition (2011-05-16 : Grand Rapids, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

Acoustical materials are widely used in automotive vehicles and other industrial applications. Two important parameters namely Sound Transmission Loss (STL) and absorption coefficient are commonly used to evaluate the acoustical performance of these materials. Other parameters, such as insertion loss, noise reduction, and loss factors are also used to judge their performance depending on the application of these materials. A systematic comparative study of STL and absorption coefficient was conducted on various porous acoustical materials. Several dozen materials including needled cotton fiber (shoddy) and foam materials with or without barrier/scrim were investigated. The results of STL and absorption coefficient are presented and compared. As expected, it was found that most of materials are either good in STL or good in absorption. However, some combinations can achieve a balance of performance in both categories

Notes:

Vendor supplied data

Publisher Number:

2011-01-1625

Access Restriction:

Restricted for use by site license