付加質量の付いた膜の遮音特性 : ドーム用膜材料への適用に関する遮音実験

概要

論文の詳細を見る
In the preceding paper, it was shown that attaching small weights to a membrane (called MAW) improves the sound insulation in a low frequency range. By applying this membrane to membrane structures, the sound insulation is improved without decreasing a light-transmission efficiency. This paper represents results op an experiment on the sound insulation which was made to confirm capabilities of utilizing this membrane for membrane structures. The experiment results are as follows: 1) Existence of the sound-insulation mechanism has been confirmed under incidence condition in a diffuse sound field. 2) A double layer membrane consisting of MAW and an ordinary membrane has above 10 dB greater transmission loss in a low frequency range than that of the ordinary and ordinary roembrane. 3) The effect of MAW on sound insulation disappears when the thickness of an air layer is less than 100 mm. The thickness of over 500 mm has to be kept in order to get the effect of MAW.
社団法人日本建築学会の論文
1995-09-30