Approaching a methodology for the development of a multilayer sound absorbing device recycling coal bottom ash |
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Authors: | C Arenas C Leiva LF Vilches JA González Ganso |
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Institution: | 1. University of Seville, School of Engineering, Department of Chemical and Environmental Engineering, Camino de los Descubrimientos s/n, E-41092 Seville, Spain;2. CIDAUT Foundation (Foundation for the Research and Development in Transport and Energy), Parque Tecnológico de Boecillo, 209, 47151 Boecillo, Valladolid, Spain |
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Abstract: | The aim of the present work has been to develop a methodology which accurately predicts the acoustic behavior of a material without having to manufacture large panels and testing them in reverberation room. Moreover, it can be predicted the sound absorbing performance at normal and random incidence of the sound wave on a material for different thicknesses and multilayer configurations, dramatically reducing the number of experimental tests. This methodology might decrease the cost of the investigation, which is particularly important when dealing with recycled materials that must compete with commercial products used in the same application. |
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Keywords: | Coal bottom ash Open porosity Tortuosity Airflow resistivity Acoustic simulations Sound absorption coefficient |
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