Elastic convolution effect on the solid interface

Author

Shui, Y. ; Mazarolle, D. ; Mao, Y. ; He, X.

Author_Institution

Inst. of Acoust., Nanjing Univ., China

fYear

1990

fDate

4-7 Dec 1990

Firstpage

1263

Abstract

The second-harmonic generation due to the interface nonlinear effect was studied theoretically and experimentally. Two ultrasonic shear wave beams of 7.7 MHz were incident from the glass side to the glass-iron interface in opposite directions with the same incident angle. The interface elastic nonlinear interaction produces a beam of a longitudinal wave of 15.4 MHz normal to the interface. The received longitudinal wave has a triangle shape as the input tone burst waves have a rectangular modulation.. The time delay is reasonable. The output amplitude relates to the input in a square law. The influence of the transducer positions shows that the phenomenon is due to the interface effect. The convolution efficiency is about -106.6 dBm when the apertures of the beams have not been compressed

Keywords

harmonic generation; interface phenomena; nonlinear acoustics; surface acoustic wave devices; surface acoustic waves; 15.4 MHz; 7.7 MHz; Fe; SAW; convolution efficiency; elastic convolution effect; elastic nonlinear interaction; glass-Fe interface; interface nonlinear effect; second-harmonic generation; transducer positions; ultrasonic shear wave beams; Boundary conditions; Convolution; Couplings; Frequency conversion; Glass; Iron; Pulse shaping methods; Solids; Space vector pulse width modulation; Transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1990. Proceedings., IEEE 1990

Conference_Location

Honolulu, HI

Type

conf

DOI

10.1109/ULTSYM.1990.171564

Filename

171564