考虑界面状况时柱状弹性固体的声波散射

SOUND WAVE SCATTERING BY ELASTIC CYLINDER ENCASED IN SOLID MATRIX WITH INTERPHASE LAYER

导出了求解母材料固体中镶嵌的柱状弹性固体 (两固体间存在界面薄层 )声波散射系数的一般表达式 .根据Flax的共振散射理论 ,对背向散射谱中的共振模式进行了识别 .利用模拟界面薄层的弹簧模型 ,考察了界面层切向劲度常数KT

The general equation for determining the scattered sound wave coefficients by an elastic cylinder encased in solid matrix is derived. A thin interphase layer between the matrix and cylinder is taken into account. The resonance modes and related eigenfrequencies in the backscattering spectra are discerned based on the Flax's theory. By using the spring model for interphase layer,the effect of the shear stiffness constant K-T On the resonance scattering modes is evaluated.