...P.S. Liu; S. Song; J.X. Sun Purpose The purpose of this paper is mainly to know: (1) the sound absorption coefficient of porous composite structures constituted by a new kind of lightweight ceramic foam and perforated plate; (2) the availability of an equivalent porous material model, recently...

...J.X. Sun; P.S. Liu Purpose The purpose of this paper is to provide an optimization schedule of structural parameters for the sound absorption performance of a cellular ceramic foam in the sound frequency range of 200–4,000 Hz. Design/methodology/approach The cellular ceramic foam with porosity...