The 3-dimensional elastic moduli are measured from testing simple ten sion, compression, and shear specimens. The results are in good agreement with the isotropic and reciprocal relations for a transversely isotropic material. Existing data obtained by ultrasonic techniques and another mechanical testing technique compare well with our data. The bounds of Poisson's ratio for transversely isotropic materials are shown to be zero and unity.
Get full access to this article
View all access options for this article.
References
1.
S.W. Tsai and H. Thomas Hahn, Introduction to Composite Materials, Technomic Publishing Company, 1980.
2.
N.J. Pagano, "Shear Modulus of Orthotropic Composites", AFML-TR-79-4164, March 1980.
3.
R.P. Nimmer, et al, "Laminated Composite Disc Flywheel Development", UCRL-15383, (P.O. 2479309), G.E./Schenectady, New York, (Lawrence Livermore Labs, Contract No. DOE # W-7405-Eng-48), 1981.
4.
R.D. Kriz and W.W. Stinchcomb, "Elastic Moduli of Transversely Isotropic Graphite Fibers and Their Composites"Experimental Mechanics , February 1979.
5.
P.E. Sandorff, "Transverse Shear Stiffness of T300/5208 Graphite-Epoxy in Simple Bending" , Lockheed-California Company Report No. LR 29763, November 1981.
6.
G.V. Blessing and W.L. Elban, "Aluminum Matrix Composite Elasticity Measured Ultrasonically", Journal of Applied Mechanics , Vol. 48, No. 4, December 1981.
