Abstract
In this paper we report the acoustic characterization of coir mats –a biofibremat of various weaving patterns. Being non-hazardous and fully eco friendly with fairly good sound absorption, coir mats are suitable material for acoustic applications for building and automobiles. The study reveals the potential use of coir mats for acoustic absorption purposes. Coir mats of three different weaving were selected for the study viz.Panama, Herringbone and Boucle weaving pattern.The experiment is performed on an impedance tube apparatus as per ASTM E 1050/ISO 10534-2.The effect of latex backing and thickness on absorption coefficient are also studied. The experimental analysis is made for the frequency range 100 Hz-6300 Hz.The results reveals that the mats shows good absorption coefficient at high frequencies and also the mats with latex backing and increased thickness improves the absorption of coir mats.Coating mats with fire resistant material makes it suitable for building acoustics and automobiles.
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