Technical Note. The Comprehensive Research of the Road Acoustic Screen with Absorbing and Diffusing Surface

Kamisiński, Tadeusz; Kinasz, Roman; Szeląg, Agata; Rubacha, Jarosław; Pilch, Adam; Flach, Artur; Baruch, Katarzyna

doi:10.1515/aoa-2015-0016

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Substituting a reflective barrier placed 1 m far from a railway with an absorptive one could improve IL up to 6-10 dB [20]. Placing a Schroeder diffuser on the surface of an extruded-PVC acoustic barrier could improve the IL in almost all frequencies between 315 Hz and 8000 Hz [21].…”

Section: How Does An Acoustic Barrier Work?mentioning

confidence: 99%

Overview of Noise Control Techniques and Methods

González¹

2023

Noise Control

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Noise control refers to a set of methods, techniques, and technologies that allows obtaining acceptable noise levels in a given place, according to economic and operational considerations. The question of “acceptance” is for what or for whom. Generally, there is no single answer to this question, nor is there a single solution to any given problem, as long as regulatory compliance is achieved. Noise control does not necessarily imply the reduction of noise emissions—it refers to making acceptable sound pressure levels of immission (i.e., the signal reaching the receiver). This chapter aims to present the basis of noise control techniques, both in emission and propagation, to finally achieve the most current protection techniques for the receivers, when there are no more alternatives in the previous steps.

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Section: How Does An Acoustic Barrier Work?mentioning

confidence: 99%

Overview of Noise Control Techniques and Methods

González¹

2023

Noise Control

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“…seals, on the acoustic parameters of the screen. And in the work (Kamisiński et al, 2015), the authors presented novel solutions of sound diffusing screens resistant to atmospheric conditions. The weathering effects which have influence on the efficiency of the screen were also investigated in the work (Watts, 2000).…”

Section: Introductionmentioning

confidence: 99%

Archives of Acoustics

Nowoświat

Bochen

Dulak

et al. 2018

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The present paper is comparing the results of research studies carried out for three road acoustic screens of different design and different number of damping layers. For the tests, we selected timber or steel screens with a traditional multilayer structure and also one innovative type of simplified design. With respect to particular panels, their sound absorption properties were investigated in the reverberation chamber after they had been subjected to simulated weathering. In the process, two screens were subjected to the aging tests of 50-500 cycles in a special climatic chamber, and the innovative screens were subjected to 1000 cycles. The procedure was repeated every 50 or 100 cycles in order to obtain the changes of acoustic characteristics. The changes taking place in the absorbing material were also investigated with the use of scanning electron microscopy method (SEM). Basing on the obtained results and on the statistical analysis, the capability to maintain acoustic properties by the panels during their service life in natural conditions was estimated. For that purpose, linear statistical models were worked out, which were then applied to estimate the value of the single number sound absorption coefficient after successive aging cycles as well as the predicted time periods of acoustic class changes.

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