The Journal of the Acoustical Society of America · 1990 · 24 citations · 0 references
AeroacousticsEngineeringPorous Medium EquationsMechanical EngineeringSurface ImpedanceComputational MechanicsPorous BodyLayered Porous MaterialsAcoustic MaterialNoiseAcoustical EngineeringSound PropagationOblique IncidenceMaterials ScienceAcoustic MethodsImpervious ScreensStructural Health MonitoringAcoustic PropagationUltrasoundPore StructureSurface ScienceApplied PhysicsCivil EngineeringSurface EngineeringPorosityMultiscale Modeling
A matrix representation of the acoustical properties of porous layers at oblique incidence is used to predict the surface impedance of layered porous materials with impervious screens. The screens can be located inside the material or at the surface. Comparisons between prediction and measurement achieved with a new technique are given.