Metall.Mater.Trans.A 33A, 3187-3199, 2002

NORMALIZED DIAGRAMS FOR MICROMECHANICAL ESTIMATES OF THE ELASTIC RESPONSE OF COMPOSITE MATERIALS

H.E. Pettermann1, H.J. Böhm1, J. Alcalá2

1Institute of Lightweight Structures and Aerospace Engineering,
TU Wien, Vienna, Austria
2Dept. of Materials Science and Metallurgical Engineering,
Universitat Politècnica de Catalunya, Barcelona, Spain


Abstract - Normalized diagrams for the evaluation of the Young's and shear moduli of elastic two-phase materials are presented. The diagrams allow to predict the overall elastic moduli of composites considering the elastic properties, the volume fractions, and the micro-topology of the constituents. Matrix-inclusion topologies with reinforcement by particles, fibers, and platelets as well as interpenetrating morphologies and porous materials can be analyzed. The diagrams are predicated upon well-known micro-mechanical models, such as the Hashin-Shtrikman bounds, Mori-Tanaka methods and classical self-consistent schemes which reflect the interaction of the constituents in inhomogeneous materials. Comparisons between predictions from the models and experimental results from the literature are performed to support the applicability of the approaches.
(hjb,021007)