Acoustical performance of loose cork granulates

This paper reports on an investigation of the acoustical performance of loose cork granulates. This investigation is based on the physical parameters of loose granular cork obtained through an empirical model of the acoustic properties of loose granular media shown by Voronina and Horoshenkov and th...

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Bibliographic Details
Published in:European journal of wood and wood products 2014-05, Vol.72 (3), p.321-330
Main Authors: Maderuelo-Sanz, Rubén, Barrigón Morillas, Juan Miguel, Gómez Escobar, Valentín
Format: Article
Language:English
Subjects:
Acoustic properties
Biomedical and Life Sciences
Ceramics
Composites
cork
Glass
Granular materials
Granular media
Granulation
Life Sciences
Machines
Manufacturing
Natural Materials
Noise control
Original
particle size
Physical properties
Processes
Sound transmission
Wood Science & Technology
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Summary:This paper reports on an investigation of the acoustical performance of loose cork granulates. This investigation is based on the physical parameters of loose granular cork obtained through an empirical model of the acoustic properties of loose granular media shown by Voronina and Horoshenkov and the experimental performance of these granulates. The performance is assessed according to ISO 10534-2 (1998). The data obtained show clearly that this porous absorber exhibits high sound absorption performance varying with particle size. The relationship between the experimental and the model results demonstrates the existence of significant differences between particle sizes >3.5 mm. Finally, the performance of this material is compared to other granular materials.
ISSN:0018-3768
1436-736X
DOI:10.1007/s00107-014-0784-x