検索結果 1 件
デジタル記事
インターネットで読める全国の図書館
- 要約等The longitudinal sound absorption capability and air permeability of three species of Japanese wood were investigated. The air permeability values of Sugi, Chanchin-modoki, and Yurinoki were 0.5, 0.06, and 0 (air flow not detected) darcy for the heartwood and 18.2, 0.92, and 0.91 darcy for the sapwood, respectively. The noise reduction coefficients of those three sp......re 0.04, 0.04, and 0.09 for the heartwood and 0.11, 0.05, and 0.14 for the sapwood, respectively. The mean sound absorption coefficients of those sample specimens in the frequency range of 50–6400 Hz were 0.08, 0.06, and 0.20 for the heartwood and 0.16, 0.09, and...
- 件名Air permeability Sound absorption coefficient Sugi Chanchin-modoki Yurinoki
- 件名（識別子）Air permeability Sound absorption coefficient Sugi Chanchin-modoki Yurinoki