Lamb wave reflection at the free edge of a plate.
This study concentrates on the reflection of Lamb waves at the free end of a plate. The conversion phenomena are examined in detail over a large frequency range and the energy conversion coefficients are obtained by three different ways: theoretically, numerically (finite element method) and experimentally. The experimental energy determination is obtained from the measurement of the plate normal displacements, by mean of a laser interferometer. All results are in relatively good agreement and the energy balance between incident and reflected waves is discussed in each case.
Morvan
Bruno
B
Laboratoire d'Acoustique Ultrasonore et d'Electronique, CNRS (UMR 6068), Université du Havre, Place Robert Schuman, BP 4006, 76610 Le Havre, France. morvan@iut.univ-lehavre.fr
Wilkie-Chancellier
Nicolas
N
Duflo
Hugues
H
Tinel
Alain
A
Duclos
Jean
J