The Journal of the Acoustical Society of America · 1994 · 151 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials PhysicsPropagationStructural MaterialsAcoustic Wave PropagationComposite MaterialsMechanics Of Composite MaterialsPeriodic Structure AnalysisBand Gaps In Periodic StructuresElastic WavesPeriodic MediaSpectral GapsSpectrum GapsStop Band AnalysisWave Propagation In Composite StructuresWave Propagation In Solids
The frequency ω versus wave vector k of elastic waves propagating in periodic binary composites consisting of solid inclusions placed periodically in a host matrix was calculated. Attention was focused on the possibility of stop bands (spectral gaps) for all directions of propagation in such composites. It was found that gold or lead inclusions of about 10% volume fraction in a Si or Be matrix give rise to stop bands.