TONG Xiaopeng1 BAI Guofeng2 LIU Ke2 TIAN Jing2
(1 Beijing Municipal Institute of Labour Protection Beijing 100054)
(2 Institute of Acoustics, Chinese Academy of Sciences Beijing 100190)
Received Jan.3, 2008
Revised Apr.7, 2008
Abstract The sound absorption of fluid-loaded thin-panel absorbers was investigated. A general theory and an approximate theory are given. Parameters of potential energy kinetic energy, and the fluid-loading factor are proposed. This has made the absorption mechanism clearer, and the computation simpler than before. This absorption coefficients and impedances of thin-panel absorbers were tested with a hydro-acoustical tube. The experimental results agreed well with the theoretical results.
PACS numbers:
|
