Dielectric and Elastic Characterization of Nonlinear Heterogeneous Materials
| Autor: | Stefano Giordano |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Materials science
Dielectric Review lcsh:Technology composites (nanosystems embedded in a larger structure) General Materials Science nonlinear constitutive equations lcsh:Microscopy lcsh:QC120-168.85 Condensed matter physics lcsh:QH201-278.5 lcsh:T Isotropy Ellipsoid Aspect ratio (image) Characterization (materials science) Shear (sheet metal) Nonlinear system Classical mechanics lcsh:TA1-2040 mixture theory and order parameters lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering Deformation (engineering) lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials Materials, Vol 2, Iss 4, Pp 1417-1479 (2009) |
| ISSN: | 1996-1944 |
| Popis: | This review paper deals with the dielectric and elastic characterization of composite materials constituted by dispersions of nonlinear inclusions embedded in a linear matrix. The dielectric theory deals with pseudo-oriented particles shaped as ellipsoids of revolution: it means that we are dealing with mixtures of inclusions of arbitrary aspect ratio and arbitrary non-random orientational distributions. The analysis ranges from parallel spheroidal inclusions to completely random oriented inclusions. Each ellipsoidal inclusion is made of an isotropic dielectric material described by means of the so-called Kerr nonlinear relation. On the other hand, the nonlinear elastic characterization takes into consideration a dispersion of nonlinear (spherical or cylindrical) inhomogeneities. Both phases are considered isotropic (actually it means polycrystalline or amorphous solids). Under the simplifying hypotheses of small deformation for the material body and of small volume fraction of the embedded phase, we describe a theory for obtaining the linear and nonlinear elastic properties (bulk and shear moduli and Landau coefficients) of the overall material. |
| Databáze: | OpenAIRE |
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