Identification of the elastic properties of composite materials

Victor Munoz Cuartas (1) , Marianne Perrin (2) , Marie-Laetitia Pastor (2) , Hélène Welemane (1) , Arthur Cantarel (2) , Moussa Karama (1)

1 LGP - Laboratoire Génie de Production
2 ICA - Institut Clément Ader

The mechanical characterization of composite materials is a research axis of scientific and economic importance. In fact, it is essential to measure the elastic constants of a material with accuracy in order to realize structural analysis and to optimize the design. Among the developed methods, the static methods based on strain measurement present some disadvantages: destructive evaluation and difficulties of measuring the out-of-plane elastic modulus because of the thinness. These disadvantages could be avoided by the use of non-destructive dynamic methods such as modal analysis or ultrasonic waves evaluation. Among the non-destructive methods, ultrasounds are efficient. Besides, because of the accuracy of the results as well as the repeatability of the measures, scientists are generalizing this method. This paper presents a way to determine the mechanical properties of carbon fiber composite materials. This work underlines the results obtained of phase velocity at different incident angles with a dynamic characterization method which is developed as part of non-destructive evaluation by ultrasonic waves.

Mots clés: Ultrasonic immersion testing; Elastic constants measurement; Material characterization; Orthotropic laminated composite

Domaines: Mécanique des matériaux [physics.class-ph]

Victor Munoz Cuartas, Marianne Perrin, Marie-Laetitia Pastor, Hélène Welemane, Arthur Cantarel, et al.. Identification of the elastic properties of composite materials. International Conference on Structural Analysis of Advanced Materials, Sep 2013, Kos, Greece. pp.0. ⟨hal-04041190⟩