J. Phys. IV France 02 (1992) C1-441-C1-444
DÉVELOPPEMENT D'UNE MÉTHODOLOGIE DE MESURE D'INTENSITÉ DE STRUCTURE SUR DES PLAQUES HOMOGÈNES ISOTROPESA. MITJAVILA, S. PAUZIN and D. BIRON
CERT ONERA DERMES, 2 Av. E. Belin, F-31500 Toulouse, France
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