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Materiale Plastice
Cite as: Mater. Plast.
https://doi.org/10.37358/Mat.Plast.1964

OSIM Nr. R102356
ISSN Print 0025-5289
ISSN Online 2668-8220
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Materiale Plastice (Mater. Plast.), Year 2012, Volume 49, Issue 1,





IOAN CURTU, MARIANA DOMNICA STANCIU, CAMELIA COSEREANU, Vasile Ovidiu Assessment of Acoustic Properties of Biodegradable Composite Materials with Textile Inserts


Abstract:
The paper focuses on the experimental evaluation of acoustic properties of biodegradable composite materials with textile inserts used for products with a protective role in the urban habitat. The materials used in this study are obtained from mixed wood and textile waste bonded together with ecological binders. In order to determine the absorption and reflection coefficients, the samples were tested using the impedance tube Bruel & Kjaer type, 4206 A, with a frequency range between 100 - 3200 Hz. It was concluded that the tested specimens have shown a high absorption coefficient for the frequency range between 800 - 2800 Hz. It was also noticed that the values of absorption coefficient depended on the type and quantity of binders. Based on the experimental results, the composition of the tested materials will be improved in the future in order to obtain a good absorption of the sound at low frequencies. Keywords: absorption, reflection, composite, frequency, impedance tube



Issue: 2012 Volume 49, Issue 1
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