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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 |
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| Cite this article: |
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WU Rui-Xin, WANG Yao-Jun 2004 Chin. Phys. Lett. 21 1976-1978 |
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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.
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| Keywords:
43.20.+g
43.35.+d
81.70.Cv
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Published: 01 October 2004
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| PACS: |
43.20.+g
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(General linear acoustics)
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43.35.+d
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(Ultrasonics, quantum acoustics, and physical effects of sound)
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81.70.Cv
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(Nondestructive testing: ultrasonic testing, photoacoustic testing)
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