Paper number 1342

MECHANICAL IDENTIFICATION OF ANISOTROPIC PROPERTIES OF COMPOSITES

Michel Grédiac¹, Fabrice Pierron², Yves Surrel³ and Alain Vautrin²

1LERMES, Université Blaise Pascal, 24, avenue des Landais, BP 206
63174 Aubière Cedex, France
2SMS/Department of Mechanical and Materials Engineering, 158, cours Fauriel, Ecole Nationale Supérieure des Mines de Saint-Étienne, 42023 Saint-Étienne Cedex 02, France
3Chair for instrumentation, Conservatoire National des Arts et Métiers, 292, rue Saint-Martin, 75141 Paris Cedex 03, France

Summary

This paper deals with the experimental identification of parameters governing the elastic properties of composite plates. The approach is based on the processing of the heterogeneous strain fields which are provided by well chosen mechanical tests. These fields are measured by particular optical setups developed in-house and are briefly described herein. The identification procedure itself is based on a specific use of the principle of virtual work. Examples of measurements of in-plane, bending and through-thickness stiffness components illustrate the approach.

Keywords

full-field measurements, identification, mechanical characterization, optical methods, principle of virtual work.