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Cálculo inverso de la resistividad al flujo de aire de lanas minerales

Authors: Fernández, Dásil; Luque, Pablo; Pfretzschner, Jaime; Simón, Francisco;

Cálculo inverso de la resistividad al flujo de aire de lanas minerales

Abstract

Una magnitud importante para el uso de modelos analíticos que describen el comportamiento acústico de materiales absorbentes fibrosos y la propagación de la onda sonora a su través es la resistividad al flujo de aire. Aunque existen procedimientos bien establecidos para la medición de esta magnitud, la presencia del tipo de equipos necesarios para su obtención no es habitual en los laboratorios de ensayos acústicos. En este trabajo se presenta un procedimiento alternativo mediante el cual se puede estimar la resistividad al flujo de materiales fibrosos a través de medidas del coeficiente de absorción en tubo de ondas estacionarias. Con este fin se ha implementado un procedimiento inverso de cálculo numérico que liga ambas magnitudes a través de modelos analíticos conocidos y ampliamente utilizados. Por último, se ha aplicado el procedimiento desarrollado a una serie de casos que permiten ilustrar y valorar sus prestaciones.

6 pages, 2 figures.-- PACS nr.: 43.20.Hg.-- Comunicación presentada en: XXXVI Jornadas Nacionales de Acústica – TecniAcústica 2005, Encuentro Ibérico de Acústica y EAA Symposium "Southern Europe Workshop on Environmental Acoustics and IMAGINE project" (Terrassa, 19-21 Oct 2005).

El presente trabajo se ha realizado con el soporte económico del Proyecto del Plan Nacional con referencia DPI2004-05504-C0201.

Publicado en número especial de la Revista de Acústica: Vol 36, 3-4 (2005).

Peer reviewed

Keywords

Materiales absorbentes fibrosos, Cálculo numérico, Tubo de ondas estacionarias, Propiedades acústicas, Resistividad al flujo de aire, Lanas minerales, Impedancia característica, Constante de propagación de onda

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This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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