Table of Contents
ISRN Ceramics
Volume 2011, Article ID 510474, 9 pages
Research Article

The Stiffness of Syntactic Metal-Matrix Composites: A Statistical Model

1Materials Science Department (DCM), Faculty of Science and Technology, New University of Lisbon, Quinta da Torre, 2829-516 Caparica, Portugal
2CENIMAT/I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia (FCT), Universidade Nova de Lisboa, 2829-516 Caparica, Portugal

Received 29 September 2011; Accepted 19 October 2011

Academic Editor: Y. Waku

Copyright © 2011 J. D. Botas and H. Águas. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Stiffness estimates of unloaded isotropic particulates are made by a new analytical model, when reinforcements are either compact or hollow spheres. A statistical extension of this model is described when stiffness predictions involve loading of syntactic composites. A simple experimental routine is also proposed for monitoring the microballoons fracture upon brittle syntactic metal-matrix composites tensile loading.