Sound Absorption Study for Automotive Carpet Materials

870988

04/28/1987

Event
SAE Noise and Vibration Conference and Exposition
Authors Abstract
Content
This paper discusses the results of an experimental study on sound absorption of a number of automotive carpet materials. The results are compared to each other and to other “acoustical materials”.
Initial impedance tube measurements of 18 different materials showed the expected trend of increasing absorption as thickness increased. Twelve materials were then tested in a reverberation room. Test results showed that most materials had significant absorption above 500 Hz with values for the better materials approaching values for fiber glass. Absorption correlated highly (r = 0.92) with thickness and very highly (r = 0.98) with the product of thickness and surface weight, indicating that the absorption of new constructions can be predicted. However, reverberation room results did not correlate well with impedance tube results.
Meta TagsDetails
DOI
https://doi.org/10.4271/870988
Pages
6
Citation
Saha, P., and Baker, R., "Sound Absorption Study for Automotive Carpet Materials," SAE Technical Paper 870988, 1987, https://doi.org/10.4271/870988.
Additional Details
Publisher
Published
Apr 28, 1987
Product Code
870988
Content Type
Technical Paper
Language
English