The Journal of the Acoustical Society of America · 1977 · 137 citations · 0 references
Natural SciencesMaterials SciencePhysicsAcousticsPropagationUltrasoundAcoustic Wave PropagationPhysical AcousticsSound TransmissionUltrasonicsUltrasound PhysicsWave ReflectionAcoustic Reflection CoefficientsReflection Coefficient AnalysisReflection CoefficientsUltrasonic AcousticsUltrasonic PropagationUltrasonic ReflectionUltrasonic WavesWave Properties
The wave equation is solved to determine the transmission and reflection coefficients for plane waves at oblique incidence on a system of n layers of plane parallel plates. Both shear- and longitudinal-wave properties of the materials are included in the derivation. Equations are presented in a form which will facilitate adaptation to a digital computer. Data measured in the frequency range 100–700 kHz for one, two, and three solid layers immersed in water compare favorable with computer results.