Sound absorption characterization of aluminum foam made by press infiltration casting
Multidiscipline Modeling in Materials and Structures
ISSN: 1573-6105
Article publication date: 14 November 2016
Abstract
Purpose
The purpose of this paper is to investigate the sound absorption by modeling for the aluminum foam produced by press infiltration casting.
Design/methodology/approach
First use Johnson-Allard-Champoux (JAC) model to calculate the sound absorption coefficient of the present aluminum foam, and then improve it after finding its deviation from the experimental data, so as to get an improved model that could have a good agreement with the experimental result.
Findings
Using JAC model to calculate the sound absorption coefficient of the present aluminum foam, it is found that the model may have a good agreement with the experimental data only for the sound wave frequency below the absorption peak frequency, but a large deviation from the experimental result for the sound wave frequency above this frequency.
Originality/value
Improving JAC model by means of two factors, i.e., the absorption peak frequency and the specific surface area, the resultant improved model could be in good agreement with the experimental data.
Keywords
Acknowledgements
This paper is supported by the Testing Foundation of BNU (No. C16).
Citation
Sun, J.X., Duan, C.Y. and Liu, P.S. (2016), "Sound absorption characterization of aluminum foam made by press infiltration casting", Multidiscipline Modeling in Materials and Structures, Vol. 12 No. 4, pp. 737-747. https://doi.org/10.1108/MMMS-03-2016-0010
Publisher
:Emerald Group Publishing Limited
Copyright © 2016, Emerald Group Publishing Limited