Several specimen configurations and testing procedures have been proposed in the literature for determining the in-plane elastic constants of orthotropic composites. Static loading, vibrations, and wave propagation have been employed with tension, beam, half plane and other specimens. In the present investigation, a diametrically loaded circular disk specimen with a number of strain gages is used, along with a theoretical solution and a least squares procedure. The in-plane elastic constants determined for a pultruded composite disk are shown to agree well with those obtained by conventional measurements.
展开▼
