Material Parameter Determination in Glass Wool Mat for Sound Absorption

Abstract

Glass wool mat is widely used in the fields of building engineering, transport facilities and refrigeration equipment. In this paper, the effect of material parameters such as density, thickness, porosity, and flow resistivity on the normal incidence absorption coefficient has been studied. In addition, fiber length is also investigated to achieve appropriate strength. The prediction error of normal incidence absorption coefficient by modified Johnson–Allard model is less than 5% in the frequency range between 800 Hz and 5 kHz. We could use the modified Johnson–Allard model to determine the parameter of glass wool mat for better development.

Development of an empirical model for the prediction of the airflow resistivity of thin and low-density fibrous materials

“…The external data used to produce Table 4, was obtained from the following references; [7], Li et al [8], and Yang et al [9]. As it can be seen from Table 4, the current models lack prediction consistency with high variation between the predicted minimum and maximum percentage differences.…”

Cellulase assisted synthesis of nano-silver and gold: Application as immobilization matrix for biocatalysis

“…[10,11]. Till date, the exact mechanism of nanoparticle synthesis by biological resources has not been fully understood.…”

Influence Analysis of the Parameters on Sound Absorbing Performance for Polymer Wool

“…Yilmaz [5] investigated the relationships between the factors, i.e., the fiber fineness, porosity, areal density, layering sequence, and airflow resistivity with the normal-incidence sound absorption coefficient of porous polymer materials. Li [6] studied the effect of parameters such as density, porosity, thickness, flow resistivity on the sound absorbing performance of glass wool. Researchers also studied the effect of the parameters on the sound-absorbing performance of other porous materials such as natural fibers, foams, etc.…”