Noise Barriers 2021

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Acoustics and Vibrations".

Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 4721

Special Issue Editors

Silesian University of Technology, Department of Measurements and Control Systems, Akademicka 16, 44-100 Gliwice, Poland
Interests: noise and vibration control; structural control; signal processing; optimization; modeling
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Institute of Sound and Vibration Research, University of Southampton, Southampton, UK
Interests: active noise control; active vibration control; loudspeaker arrays; active acoustic metamaterials; personal sound zones
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KU Leuven
Interests: noise and vibration control; numerical methods; measurement techniques; material characterisation
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Special Issue Information

Dear Colleagues,

It is our great pleasure to invite you to contribute to this Special Issue by presenting your results on acoustic noise barriers. The main concern is to protect humans from excessive noise, which may impair the hearing system or may impede concentration and rest. The papers can focus on structural noise control, for instance, vibrating panels or full device casings designed to improve passive isolation. Energy of the panels due to acoustic excitation can also be dissipated in a semi-active circuit or they can be forced to vibrate in order to reduce the transmitted noise. Works on the generation of virtual barriers such as acoustic curtains are welcome. Techniques for improving the acoustic climate in enclosures are also appreciated. The papers can present modeling, optimization, control, measurements, analysis, and applications.

Prof. Dr. Marek Pawełczyk
Dr. Jordan Cheer
Prof. Dr. Nicolaas Bernardus Roozen
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • active structural acoustic control
  • passive control
  • semi-active and active control
  • virtual barriers
  • device noise control

Published Papers (2 papers)

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19 pages, 78095 KiB  
Article
Possibilities of Evaluating the Effectiveness of Noise Barriers in Slovakia
by Alžbeta Pultznerová, Ján Šimo and Juraj Grenčík
Appl. Sci. 2021, 11(21), 10206; https://0-doi-org.brum.beds.ac.uk/10.3390/app112110206 - 31 Oct 2021
Cited by 1 | Viewed by 1743
Abstract
This paper presents environmental acute problems from increasing noise levels caused by automobile and rail transport. Noise barriers are considered to be an effective element in reducing noise in densely populated urban areas. However, do these barriers have the correct height, shape, material [...] Read more.
This paper presents environmental acute problems from increasing noise levels caused by automobile and rail transport. Noise barriers are considered to be an effective element in reducing noise in densely populated urban areas. However, do these barriers have the correct height, shape, material design, and construction? In the materials and methods, the basic characteristics of noise barrier, sound absorption, and sound insulation are described. Further, measurement methods of the insertion loss of outdoor noise barriers of all types using the direct and indirect method according to standard ISO 10847 and the Adrienne method according to standards EN 1793-5 and EN 1793-6 are presented. The measurement results of insertion loss of the selected noise barrier obtained by the indirect method showed a value of 19.1 dB(A) of insertion loss. This result was compared with simulation by our own software based on the CNOSSOS methodology, giving value of 19.6 dB(A), which is a good correlation. The Adrienne method was used for determination of the airborne sound insulation index of another noise barrier, giving a value of the single-number rating of the sound insulation of the barrier of 28 dB. In discussion, according to EN 1793-2, this value assigns an insulation index of category D3, which means that the barrier is high quality and has satisfactory airborne sound insulation. The advantages and disadvantages of both methods according to STN ISO 10847 and STN EN 1793-6 were discussed. We concluded that the main advantage of the method Adrienne—TN EN 1793-6 is that it can be used in situ under direct sound field conditions and can directly evaluate the sound insulation index of the whole barrier structure. Full article
(This article belongs to the Special Issue Noise Barriers 2021)
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33 pages, 11030 KiB  
Case Report
Evaluation of Construction Site Noise to Allow the Optimisation of Construction Processes and Construction Machinery Selection
by Radka Kantová
Appl. Sci. 2021, 11(10), 4389; https://0-doi-org.brum.beds.ac.uk/10.3390/app11104389 - 12 May 2021
Cited by 7 | Viewed by 2446
Abstract
During the pre-construction phase of an investment project, a construction plan is usually prepared by the building contractor. It contains financial plans, schedules, technical regulations with working procedures and proposals for the deployment of construction machinery and work teams. These items are then [...] Read more.
During the pre-construction phase of an investment project, a construction plan is usually prepared by the building contractor. It contains financial plans, schedules, technical regulations with working procedures and proposals for the deployment of construction machinery and work teams. These items are then optimised in order to save money, shorten construction time and increase the quality of the final work while ensuring environmental and safety standards are maintained at the site. The ecological aspects of building work include compliance with the hygiene limits for building site noise, which is caused in particular by the simultaneous operation of machines. In the Czech Republic, limit values are set by Government Regulation 272/2011 Coll., as amended, on the protection of health against the adverse effects of noise and vibrations. The evaluation of construction site noise is not usually performed by contractors themselves and noise is usually measured only at the construction site, where work is limited or additional measures are taken in the case of values that exceed the stipulated limits. As the values in the construction plan should be as close as possible to reality during the implementation of the plan, it would seem appropriate to include such noise assessments within it. The purpose of this paper is to present an example of such an evaluation from the formal and material standpoint. The assessment has been conducted in the form of a specific noise study, expanded by a commentary on the treatment of the hypotheses. It shows how to obtain input data for evaluation, divide sub-calculations and use the supporting SW of the Hluk plus product for the purposes of construction information modelling, as well as how to correctly set noise sources and the positions of measured points for evaluation by the model within this programme. Subsequently, options for the evaluation of appropriate measures are listed, including their inclusion in reassessments. Full article
(This article belongs to the Special Issue Noise Barriers 2021)
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