0000000000220700
AUTHOR
Beatrice Lay
Thermomechanical Behavior of Beams Covered with Viscoelastic Patches
International audience; Infrared thermography is a non-destructive test method based on infrared measurement that provides a luminance map of the thermal scene observed, converting to temperature. The thermographic study allows a surface observation of the thermal effects in order to display the result as a film of the temperature distribution [1]. The present study focuses on the detection of volumetric energy sources in beams covered by viscoelastic patches.
Étude Du Comportement Thermomécanique De Structures Recouvertes De Patchs Visco-Contraints
International audience; La thermographie infrarouge est une méthode qui permet d'obtenir la carte de luminance de la scène thermique observée, de la convertir en température apparente et d'afficher ou d'enregistrer le résultat sous la forme d'une image de la distribution de la température. Nous l'utilisons ici, pour la détection à distance, des sources d'énergie dans des structures formées de poutres recouvertes de patchs viscoélastiques.
A study of noise transmission through cylindrical shell using modal truncation approach
International audience; The study of the vibroacoustic behaviour of cylindrical structure like aircraft fuselage requires the establishment of very large models, and the numerical results which can be obtained are often difficult to interpret. On the other hand, the study of simple structures such as cylindrical shells is useful to validate the criteria and tools that can be used to simplify the models of complex structures. The presented study concerns the sound transmission through a cylindrical shell coupled to a cavity and subjected to an incident acoustic wave. Noise reduction is obtained and validated by a numerical method which uses structural and acoustical modes. A criterion for se…