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Advances in Aircraft and Spacecraft Science Volume 2, Number 3, July 2015 , pages 249-261 DOI: https://doi.org/10.12989/aas.2015.2.3.249 |
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Determination of the elastic properties in CFRP composites: comparison of different approaches based on tensile tests and ultrasonic characterization |
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Victor Munoz, Marianne Perrin, Marie-Laetitia Pastor, Helene Welemane, Arthur Cantarel and Moussa Karama
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| Abstract | ||
| The mechanical characterization of composite materials is nowadays a major interest due to their increasing use in the aeronautic industry. The design of most of these materials is based on their stiffness, which is mainly obtained by means of tensile tests with strain gauge measurement. For thin laminated composites, this classical method requires adequate samples with specific orientation and does not provide all the independent elastic constants. Regarding ultrasonic characterization, especially immersion technique, only one specimen is needed and the entire determination of the stiffness tensor is possible. This paper presents a study of different methods to determine the mechanical properties of transversely isotropic carbon fibre composite materials (gauge and correlation strain measurement during tensile tests, ultrasonic immersion technique). Results are compared to ISO standards and manufacturer data to evaluate the accuracy of these techniques. | ||
| Key Words | ||
| carbon fibre composite; elastic constants; immersion ultrasonic characterization; tensile test; stiffness tensor | ||
| Address | ||
| Victor Munoz, Helene Welemane, Moussa Karama: Universite de Toulouse, INP-ENIT, LGP, 47 avenue d\'Azereix, 65016 Tarbes, France Marianne Perrin, Marie-Laetitia Pastor, Arthur Cantarel: Universite de Toulouse, IUT, ICA, 1 rue Lautreamont, BP 1624, 65016 Tarbes, France | ||
