ATTENUATION OF NOISE POLLUTION IN AN INDUSTRIAL HALL, THROUGH THE SOUND-ABSORBING PANELS MADE FROM TREE BARK

Arabela LUNGU, Georgeta TODICA, Mariana ARGHIR

Abstract


The paper presents numerical simulation of sound attenuation average pollution in an industrial Hall by using MATLAB Simulink package programme. The pollutant is mounted a sound-absorbing panel consisting of tree bark from different species in the mix, which has a wall thickness of 10 cm and 50 cm. The study shall be carried out at frequencies of 125Hz, 250Hz, 500Hz, 4000Hz, and 1000 Hz within, for as these are frequent cleaner producing auditory organ diseases of human operator.


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References


http://www.ecophon.com/en/resources/acoustic-knowledge-bank/Basic-Acoustics/Sound-absorption;

SR EN ISO 11654:2005. Acustică. Absorbanți acustici utilizați în clădiri. Evaluarea absorbției acustice;

Arabela LUNGU, Mariana ARGHIR, Studii şi cercetări privind poluarea sonoră în halele industriale, „Conferinţa Internaţională Multidisciplinară „Profesorul Dorin Pavel – fondatorul hidroenergeticii româneşti”, Sebeş, 6 – 7 iunie 2014, Ştiinţă şi Inginerie, ISSN 2067-7138, An XIV, Vol. 26 / 2014, pag. 191-198, Ed. AGIR;

ISO 9613-2, Acoustics — Attenuation of sound during propagation outdoors — Part 2: General method of calculation, 1996.


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