[キーノート講演3]多孔板と吸音材の吸音メカニズムに関する検討 : 振動屋と音屋の接点を求めて(音のダンピング設計2)
スポンサーリンク
概要
- 論文の詳細を見る
Sound absorbing mechanism of perforated panels and porous materials is discussed from the viewpoint of both mechanical vibration engineers and noise control engineers. Firstly, several sound absorbing indexes are described, comparing with one degree of freedom vibration system. Secondly, sound absorption coefficient o perforated panels are studied. Damping mechanism of that panel consists of both pressure loss caused by particle velocity and viscosity in boundary layer. Four microphone technique is applied to measure both damping mechanisms and theoretical damping are compared with measured one. Thirdly, sound absorbing mechanism for porous material is described. Finally, porous materials are tested to measure complex sound propagation speed and complex effective density of the material. Measured data is used to analyze sound field with bulk reacting sound absorbing material.
- 一般社団法人日本機械学会の論文
- 2002-01-11
著者
関連論文
- 318 4 点マイク法による定常流下の多孔板の減衰特性同定研究
- 647 4点マイクによる多孔板の吸音特性の実験的研究(遮音・吸音・減衰評価)(OS.10 : ダンピング)
- [キーノート講演3]多孔板と吸音材の吸音メカニズムに関する検討 : 振動屋と音屋の接点を求めて(音のダンピング設計2)
- 665 1 次元波動方程式を利用した減衰特性などの測定方法(吸音材, 消波工, 制振鋼板, ロープ張力への適用)
- 波動現象を利用した材料特性の同定 : 吸音材、制振鋼板、ロープ張力、消波構造物への適用(OS-4 基調講演)