The performances of materials used for impact noise insulation can be estimated when dynamic stiffness is known, together with other mechanical properties measured through small samples tests. However, the calculation of impact noise level attenuation from dynamic stiffness data, according to the standards, can be influenced by the testing methodologies adopted, in particular the presence or absence of the gypsum layer between the sample and the steel plate. In this work a comparison between impact noise level attenuation calculated from dynamic stiffness data of different materials and measured in laboratory according to ISO 140-8 is done, in order to check the precision of the theoretical calculation and the influence of different test methodologies.
Influence of the Sample Preparation for Dynamic Stiffness Tests on the Calculation of Impact Noise Level Attenuation
LUISON, LEONARDO;DI BELLA, ANTONINO;
2010
Abstract
The performances of materials used for impact noise insulation can be estimated when dynamic stiffness is known, together with other mechanical properties measured through small samples tests. However, the calculation of impact noise level attenuation from dynamic stiffness data, according to the standards, can be influenced by the testing methodologies adopted, in particular the presence or absence of the gypsum layer between the sample and the steel plate. In this work a comparison between impact noise level attenuation calculated from dynamic stiffness data of different materials and measured in laboratory according to ISO 140-8 is done, in order to check the precision of the theoretical calculation and the influence of different test methodologies.Pubblicazioni consigliate
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