Mesures des constantes élastiques et du frottement intérieur des solides par méthode de résonance, entre $20~^circ$C et $1,200~^circ$C

Abstract
An apparatus, based on the resonant frequency technique, has been developed for the determination of elastic constants and internal friction, of isotropic and anisotropic materials, from room temperature to $1,200~^circ$C. This paper describes the apparatus and presents the results of a fine investigation concerning the necessary conditions for accurate measurements. Furthermore, some applications on different materials are reported