ISSN: 0884-6804
Page Count: 5

Determination of Nonlinear Shear Modulus of a Fiber-Reinforced Lamina from the Axial Behavior of (±45)^s Specimens
Lifshitz, JM
Associate professor, Technion, Haifa

Abstract

A method for calculating the nonlinear shear modulus of a fiber-reinforced composite lamina, shown to be insensitive to the value of Poisson's ratio, is developed for use in conjunction with testing of (±45)^s, specimens. The axial shear strain is calculated from measured values of the axial strain and the known values of the other three basic properties of the lamina (longitudinal and transverse moduli and Poisson's ratio). The method is verified by comparing calculated results to measured values obtained from compression tests of (±45)^4s T300-934 graphite/epoxy specimens.

Keywords:
composites, shear modulus, shear strain, nonlinear shear modulus, fiber-reinforced lamina, (±45)s, specimens, Poisson's ratio, graphite/epoxy

Paper ID: CTR10277J
DOI: 10.1520/CTR10277J
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