Determination of the Elastic Properties of Composite Materials by Tensile Testing and Ultrasound Measurement

Abstract

A comparative study on different ways to determine the mechanical properties of four glass fiber composite materials, two of which with orthotropic behaviour, is developed in this paper. This work highlights the accuracy of the results obtained by means of a low cost dynamic characterization method which is developed as part of nondestructive evaluation by ultrasonic wave velocities measurement, compared to a static characterisation method by tensile testing.

Keywords

mechanical properties tensile testing ultrasound measurement glass fiber

References

1. Gommers, B. , Verpoest, I. and Van Houtte, P. 1998. Determination of the mechanical properties of composite materials by tensile tests. Part I: Elastic properties. Journal of Composite Materials, Vol. 32-4, 310-334.

2. Paris, P.A. 1997. Identification directe des rigidites de flexion de plaques composites a partir de la mesure de leurs modes propres en vibrations libres: principe theorique, simulations et mise en œuvre experimentale. Ph.D. Thesis, Universite de Lyon I, France.

3. Castagnede, B. 1984. Mesure des constantes elastiques de solides anisotropes par une methode ultrasonore. Ph.D. Thesis, Universite de Bordeaux I, France.

4. Papadakis, E.P. 1998. Ultrasonic wave measurement of elastic moduli E, G and v for product development and design calculations. Journal of Testing and Evaluation, Vol. 26-3, 240-246.

5. Baum, G.A. 1987. Elastic properties, paper quality, and process control. Appita, Vol. 40-4, 288-294.

6. Baste, S. and Hosten, B. 1990. Evaluation de la matrice d'elasticite des composites orthotropes par propagation ultrasonore en dehors des plans principaux de symetrie. Revue de Physique Appliquee, Vol. 25, 161-168.

7. Stijnman, P.W.A. 1995. Determination of the elastic constants of some composites by using ultrasonic velocity measurements. Composites, Vol. 26, 597-604.

8. Enderby, M.D. , Clarke, A.R. , Patel, M. , Ogden, P. and Johnson, A.A. 1998. An automated ultrasonic immersion technique for the determination of three-dimensional elastic constants of polymer composites. Ultrasonics, Vol. 36, 245-249.

9. Bar-Cohen, Y. , Mal, A.K. and Lih, S.S. 1993. NDE of composite materials using ultrasonic oblique insonification. Material Evaluation, Vol. 51-11, 1285-1296.

10.

10. Berthelot, J.M. 1996.Materiaux composites. Editions Masson.

11.

11. Royer, D. and Dieulesaint, E. 1996. Ondes elastiques dans les solides. Editions Masson.

12.

12. Auld, B.A. 1973. Acoustic fields and waves in solids. New York, Wiley Intersciences, Vol. 1.

13.

13. Beakou, A. 1991. Homogeneisation et modelisation des coques composites. Ph.D. Thesis, Ecole Nationale Superieure des Arts et Metiers de Paris, France.

14.

14. Castaings, M. 1993. Propagation ultrasonore dans les milieux stratifiés plans constitutés de matériaux absorbents et orthotropes. Ph.D. Thesis, Universite de Bordeaux I, France.

15.

15. Mistou, S. , Karama, M. , El Guerjouma, R. , Ducret, D. , Faye, J.P. and Lorrain, B. 1999. Comparative study on the determination of the elastic properties of composite materials by tensile tests and ultrasound measurement. 12th International Conference on Composite Materials, July 5-9, Paris.