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Observation of nonlinear acoustic effects at isotropic solid-solid interfaces
1The Institute of Acoustics, State Key Laboratory of Modern Acoustics, Nanjing University, People's Republic of China.
The Journal of the Acoustical Society of America
|March 16, 2001
Abstract:
The second harmonic generation of SV shear waves at isotropic solid-solid interfaces is experimentally studied. The amplitude of shear waves is measured for the interfaces of glass-air, glass-iron, glass-copper, and glass-aluminum. The measured angular relation of amplitude of the second harmonic wave is compared with theory and the agreement is reasonably good. The influence of the physical state of the interface on second harmonic generation is also observed. It is found that the second harmonic generation is sensitive to the interface state.