Sound pulse broadening in stressed granular media - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review Special Topics: Physics Education Research Année : 2015

Sound pulse broadening in stressed granular media

Résumé

The pulse broadening and decay of coherent sound waves propagating in disordered granular media are investigated. We find that the pulse width of these compressional waves is broadened when the disorder is increased by mixing the beads made of different materials. To identify the responsible mechanism for the pulse broadening, we also perform the acoustic attenuation measurement by spectral analysis and the numerical simulation of pulsed sound wave propagation along one-dimensional disordered elastic chains. The qualitative agreement between experiment and simulation reveals a dominant mechanism by scattering attenuation at the high-frequency range, which is consistent with theoretical models of sound wave scattering in strongly random media via a correlation length.
Fichier principal
Vignette du fichier
Sound pulse broadening.pdf (608.88 Ko) Télécharger le fichier
PhysRevE.91.022205.pdf (840.3 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01158619 , version 1 (01-06-2015)

Identifiants

Citer

Vincent Langlois, Xiaoping Jia. Sound pulse broadening in stressed granular media. Physical Review Special Topics: Physics Education Research, 2015, http://journals.aps.org/pre/pdf/10.1103/PhysRevE.91.022205. ⟨10.1103/PhysRevE.91.022205⟩. ⟨hal-01158619⟩
217 Consultations
390 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More