Research PapersNo Access

EXPERIMENTAL VERIFICATION OF CUMULATIVE SECOND-HARMONIC GENERATION BY SHEAR HORIZONTAL MODE PROPAGATION IN AN ELASTIC PLATE

MING-XI DENG

Department of Physics, Logistics Engineering University, Chongqing 400016, China

https://doi.org/10.1142/S0217984909019739Cited by:1 (Source: Crossref)

Abstract

Primary shear horizontal (SH) mode propagation and its second harmonic are generated and detected using wedge transducers on the surface of an elastic plate. In the far field region, the clear second-harmonic response can be observed at the frequency where the phase velocity of the primary SH mode equals that of the symmetric double-frequency Lamb mode. Based on the measured results, the ratio of the second-harmonic amplitude to the square of the primary SH mode amplitude is numerically evaluated for different propagation distances. It is experimentally verified that under some conditions the second harmonic of the primary SH mode propagation grows in amplitude with propagation distance.

Keywords:

PACS: 43.25.Cb, 43.25.Dc, 43.20.Mv

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