Experimental study and signal analysis in the Lamb wave conversion at a bevelled edge.
Identifieur interne : 000098 ( Ncbi/Curation ); précédent : 000097; suivant : 000099Experimental study and signal analysis in the Lamb wave conversion at a bevelled edge.
Auteurs : N. Wilkie-Chancellier [France] ; H. Duflo ; A. Tinel ; J. DuclosSource :
- Ultrasonics [ 0041-624X ] ; 2004.
Abstract
This paper deals with a quantitative study of the conversion of a Lamb wave at the bevelled edge of a plate. A harmonic wave (successively the A1 and S0 Lamb modes) is generated using a wedge. The normal displacements at the surface of the plate are measured with a laser vibrometer and used to compute an energy evaluation. In order to determine a good mean value of incident and reflected wave amplitudes, the signals are isolated by a Fourier treatment. Then, the energy flow repartition among the converted modes is computed in both cases and for different values of the bevel angle.
DOI: 10.1016/j.ultras.2004.01.038
PubMed: 15047315
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<front><div type="abstract" xml:lang="en">This paper deals with a quantitative study of the conversion of a Lamb wave at the bevelled edge of a plate. A harmonic wave (successively the A1 and S0 Lamb modes) is generated using a wedge. The normal displacements at the surface of the plate are measured with a laser vibrometer and used to compute an energy evaluation. In order to determine a good mean value of incident and reflected wave amplitudes, the signals are isolated by a Fourier treatment. Then, the energy flow repartition among the converted modes is computed in both cases and for different values of the bevel angle.</div>
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