Side Effect of the Use of Acoustic Barriers Observed in the Infra Range

• Autorzy: Staniek Andrzej , Bartmański Cezary

Identyfikatory

DOI

10.24425/aoa.2020.132486

• Języki publikacji: EN

Abstrakty

EN

Acoustic barriers which are positioned along traffic lanes are designed to protect the surroundings from excessive noise. Such structures are to reverberate, diffract and damp the propagating acoustic waves. However, this method of shielding has some disadvantages which include constraint visibility and structure-born noise. The interaction between traffic-caused movement of air mass and acoustic barriers may generate infra noise waves. That is undesirable and should be estimated. The authors undertook the research to diagnose the plausible side effect of structure-born noise of such barriers because it may influence human body (Kasprzak, 2014). As a mechanical structure, the acoustic barrier is characterized by mechanical parameters which, in the field of modal analysis, are made up of natural frequencies, damping factors and mode shapes. In this paper the authors investigated the acoustic pressure distribution in the neighborhood of a real acoustic barrier in the scope of infra noise propagation. The methods of modal analysis were used to identify natural frequencies of the barrier and dominating frequencies of propagating waves in the far field. The correlation between observed vibration and acoustic signals is presented.

Słowa kluczowe

EN

modal analysis; infra range noise; vibration; acoustic barrier; road traffic

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2020
• Tom: Vol. 45, No. 1
• Strony: 103--110
• Opis fizyczny: Bibliogr. 10 poz., fot., rys., tab., wykr.

Twórcy

autor

Staniek Andrzej

• Central Mining Institute, Department of Acoustics, Electronics and IT Solutions, Pl. Gwarków 1, 40-166 Katowice, Poland

autor

Bartmański Cezary

• Central Mining Institute, Department of Acoustics, Electronics and IT Solutions, Pl. Gwarków 1, 40-166 Katowice, Poland

Bibliografia

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• 7. Kasprzak C. (2014), The influence of infrasounds on the Sensory Motor Rhythm (SMR) of EEG Signal, Forum Acusticum, 7-12 September 2014, Cracow, Poland.
• 8. Peiró-Torres M. P., Redondo J., Bravo J. M., Sánchez Pérez J. V. (2016), Open noise barriers based on sonic crystals. Advances in noise control in transport infrastructures, Transportation Research Procedia, 18: 392-398, doi: 10.1016/j.trpro.2016.12.051.
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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).