Measured anisotropic air flow resistivity and sound attenuation of glass wool.
作者： Viggo Tarnow
DOI: 10.1121/1.1476686
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摘要: The air flow resistivity of glass wool has been measured in different directions. was delivered from the manufacturer as slabs measuring 100x600x900 mm3, where surface 600x900 mm2 parallel with conveyor belt used manufacturing. Directions are described by a coordinate system X axis perpendicular to belt, Z direction moves, and Y two other axes. It found that resistivities directions were equal all cases. For density 14 kg/m3 mean 5.88 kPa s m(-2) 2.94 m(-2). 30 15.5 7.75 A formula for prediction densities is given. By comparing values sound attenuation results calculated data, it demonstrated can be predicted simple manner.
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