EFFECT OF THE VARIATION OF THE MECHANICAL PROPERTIES OF SOME COMPOSITES USED IN AUTOMOTIVE ENGINEERING

Abstract

During the manufacture process of a composite and after this, during the use of the material, there exists many ways in which the real material can have differences in comparison with the theoretical composite considered as a succession of a repeating cell. Sometime these differences can be great enough and they can have a major influence on the properties of the composite. In the paper we try to present haw these differences can influence the elastic constants of such material. The resulting behavior of the material will determine what kind of material will be choosing to correspond for a particular state of stresses. We refer to some materials used in automotive engineering.