Compressibility of elastomer matrix-hollow thermoplastic microspheres composites under low hydrostatic pressure - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2024

Compressibility of elastomer matrix-hollow thermoplastic microspheres composites under low hydrostatic pressure

Résumé

This paper investigates the pressure-volume response of elastomer matrix composites filled with hollow thermoplastic microspheres and subjected to low hydrostatic pressure. The hysteretic response of the material up to a pressure of 0.8 MPa is measured using an original experimental set-up that combines hydrostatic pressure loading by nitrogen pressurisation and volume measurement thanks to digital image correlation. In terms of volume change vs. pressure, a detailed analysis of the pressurisation and depressurisation paths shows firstly that the macroscopic critical pressure which is surely emerging from the successive buckling of the microspheres does not depend on their concentration in the composite. Secondly, it is established that the unloading path, even if it does not change its slope steeply, admits an inflection point that defines a second critical pressure, that seems to depend on the volume fraction of the microspheres. In the future, these model-free observations will be useful for developing constitutive models for these composites, and in particular for the strain energy density function dedicated to their spherical response.
Fichier principal
Vignette du fichier
Hydrostatic_HTM_HAL.pdf (5.57 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04851155 , version 1 (20-12-2024)

Licence

Identifiants

  • HAL Id : hal-04851155 , version 1

Citer

Ruelle Baptiste, Pierre Rublon, Michel Coret, Erwan Verron. Compressibility of elastomer matrix-hollow thermoplastic microspheres composites under low hydrostatic pressure. 2024. ⟨hal-04851155⟩
0 Consultations
0 Téléchargements

Partager

More