Acoustic Barriers: Properties of Mass-Spring Systems

962397

10/01/1996

Event
SAE Brasil 96 V International Mobility Technology Conference and Exhibit
Authors Abstract
Content
We present the physical concepts of acoustic barriers which have the purpose of reducing airborne sound transmission for both paths: internal and external noise. We introduce the mass-spring model, the utilization of compound sandwiches, and the improvement of the Transmission Loss through the use of channels in the material working as spring. We show some results regarding the behavior of absorption materials exposed to environment/working conditions. In addition we discuss the effect of acoustic leaks and the way of evaluating these barriers in vehicles. We show examples based on experimental investigations.
Meta TagsDetails
DOI
https://doi.org/10.4271/962397
Pages
9
Citation
Onusic, H., Ferraro, L., Hage, M., and Barbosa, A., "Acoustic Barriers: Properties of Mass-Spring Systems," SAE Technical Paper 962397, 1996, https://doi.org/10.4271/962397.
Additional Details
Publisher
Published
Oct 1, 1996
Product Code
962397
Content Type
Technical Paper
Language
English