TY - JOUR AU - Amedin, C.K. AU - Atalla, N. AU - Sgard, F. PY - 2001/09/01 Y2 - 2024/03/29 TI - The vibro-acoustics of a plate-backed cavity with non-homogeneous porous materials JF - Canadian Acoustics JA - Canadian Acoustics VL - 29 IS - 3 SE - Proceedings of the Acoustics Week in Canada DO - UR - https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1372 SP - 28-29 AB - The effects of air pocket or elastic patches in a homogeneous porous domain were studied. The different domains were modeled by using accurate finite element methods. It was found that the addition of air pocket does not deteriorate the acoustic performance, but leads to a reduction of the weight of the configuration. On the other hand, an increase of the acoustic performance was obtained by insertion of elastic patches, but not without any increase of the configuration weight. ER -