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Article

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Title

The use of sound-absorbing properties of acoustic panels with different degree of perforation on the outer lining layer in modeling and calculations of traffic noise

Authors

Year of publication

2023

Published in

Vibrations in Physical Systems

Journal year: 2023 | Journal volume: vol. 34 | Journal number: no. 2

Article type

scientific article

Publication language

english

Keywords
EN
  • reverberation time
  • sound absorption coefficient
  • acoustic screen
  • SoundPLAN
Abstract

EN The article presents research studies on the impact of perforation of the outer lining layer of an acoustic panel used for the construction of road noise reduction devices on its absorbing properties. The research included measurements of the reverberation time in the laboratory conditions of diffusion field, on the basis of which the values of sound absorption coefficient as a function of frequency were determined. In addition, for various solutions of acoustic panels based on a corrugated fiber cement board on the top surface and on two types of mineral wool inside the panel, the αw and αp indices as well as sound absorption rating index DLαNRD were calculated. Then, computer simulations were carried out to show the influence of laboratory-determined acoustic parameters of the panels on the acoustic climate in the vicinity of a selected transport system. The key aspects of the modeling process are presented, the characteristics of the noise source and the analysis of the results are described. An important goal of traffic noise modeling is to strive to develop more friendly and sustainable material solutions that will reduce the negative effects of noise on people and the environment.

Pages (from - to)

2023219-1 - 2023219-8

DOI

10.21008/j.0860-6897.2023.2.19

URL

https://vibsys.put.poznan.pl/_journal/2023-34-2/articles/vps_2023219.pdf

Comments

Article number: 2023219

License type

CC BY (attribution alone)

Open Access Mode

open journal

Open Access Text Version

final published version

Full text of article

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Access level to full text

public

Ministry points / journal

70

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