Numéro
J. Phys. IV France
Volume 02, Numéro C1, Avril 1992
Deuxième Congrès Français d'Acoustique / Second French Conference on Acoustics
Page(s) C1-441 - C1-444
DOI http://dx.doi.org/10.1051/jp4:1992194
Deuxième Congrès Français d'Acoustique / Second French Conference on Acoustics

J. Phys. IV France 02 (1992) C1-441-C1-444

DOI: 10.1051/jp4:1992194

DÉVELOPPEMENT D'UNE MÉTHODOLOGIE DE MESURE D'INTENSITÉ DE STRUCTURE SUR DES PLAQUES HOMOGÈNES ISOTROPES

A. MITJAVILA, S. PAUZIN and D. BIRON

CERT ONERA DERMES, 2 Av. E. Belin, F-31500 Toulouse, France


Abstract
An investigation is made on the ability of a two accelerometer probe to measure structural intensity through plates. The method applies to thin homogeneous plates excited by bending waves. A finite difference approximation of a first order spatial derivative is assumed in the expression of intensity in the far field. Numerical results on infinite plate are presented, comparing general and far field formulation of intensity. Finally, an experiment on a clamped plate shows off specific information of structural intensity with comparison to acoustic intensity and modal analysis.



© EDP Sciences 1992