Ultrasonic Scattering by an Elastic Sphere in Matrix with Imperfect Interface |
| |
作者姓名: | 伍瑞新 王耀俊 |
| |
作者单位: | [1]DepartmentofElectronicSciencesandEngineering,NanjingUniversity,Nanjing210093 [2]StateKeyLaboratoryofModernAcoustics,NanjingUniversity,Nanjing210093 |
| |
摘 要: | The general solution of ultrasonic wave scattering by an elastic sphere embedded in solid matrix with an interface layer is developed. A transfer matrix connecting the displacement and stress components on the opposite surfaces of the layer is derived. Asymptotically expanding the transfer matrix gives the equivalent boundary conditions at an interface. A spring model for describing physically a spherical imperfect interface is thus established and its validity is evaluated. Ultrasonic scatterings respectively from rigid and slip interface are numerically compared.
|
关 键 词: | 超声波散射 传输矩阵 超声波反射 弹性球面超声波 界面 |
本文献已被 维普 等数据库收录! |
|