Ultrasonic Scattering by an Elastic Sphere in Matrix with Imperfect Interface
WU Rui-Xin1, WANG Yao-Jun1,2
1Department of Electronic Sciences and Engineering, Nanjing University, Nanjing 210093
2State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093
Ultrasonic Scattering by an Elastic Sphere in Matrix with Imperfect Interface
WU Rui-Xin1;WANG Yao-Jun1,2
1Department of Electronic Sciences and Engineering, Nanjing University, Nanjing 210093
2State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093
Abstract： 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.
WU Rui-Xin;WANG Yao-Jun;. Ultrasonic Scattering by an Elastic Sphere in Matrix with Imperfect Interface[J]. 中国物理快报, 2004, 21(10): 1976-1978.
WU Rui-Xin, WANG Yao-Jun,. Ultrasonic Scattering by an Elastic Sphere in Matrix with Imperfect Interface. Chin. Phys. Lett., 2004, 21(10): 1976-1978.
2004, Vol. 21 
