The generalized Cauchy relation as an universal property of the amorphous state
Journal de Physique IV (Proceedings). Bd. 129. EDP Sciences 2005 S. 45 - 49
Erscheinungsjahr: 2005
Publikationstyp: Zeitschriftenaufsatz
Sprache: Deutsch
Doi/URN: 10.1051/jp4:2005129010
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Inhaltszusammenfassung
From the structural point of view a simple Cauchy relation is not expected to hold for isotropic materials. Such a Cauchy relation would imply the reduction of independent elastic stiffness constants for the isotropic state from two to one. However, high frequency elastic data of glasses and viscous liquids show a linear transformation between the shear and the longitudinal elastic stiffness which is called a generalized Cauchy relation. It seems, that the parameters of the linear transformat...From the structural point of view a simple Cauchy relation is not expected to hold for isotropic materials. Such a Cauchy relation would imply the reduction of independent elastic stiffness constants for the isotropic state from two to one. However, high frequency elastic data of glasses and viscous liquids show a linear transformation between the shear and the longitudinal elastic stiffness which is called a generalized Cauchy relation. It seems, that the parameters of the linear transformation are related to the global and local symmetry and/or order. Brillouin investigations on the elastic stiffness coefficients of a consolidated nano-crystalline material (CeO2) and of DGEBA/SiO2 nano-composites are used in order to elucidated the role of the discrepancy between local and global symmetry and/or order. » weiterlesen» einklappen
Autoren
Klassifikation
DDC Sachgruppe:
Ingenieurwissenschaften
Verknüpfte Personen
- Bernd Wetzel
- Technisch-Wissenschaftlicher Direktor Werkstoffwissenschaft & Kompetenzfeldleiter Tailored Thermosets & Biomaterials
(Leibniz-Institut für Verbundwerkstoffe GmbH (IVW) (RPTU in Kaiserslautern))
