The researchers conducted tests on a graphite/epoxy material to determine its elastic properties. They used tension, compression, and bending tests on square specimens to find the material's shear moduli. By analyzing bending deflections, they calculated a set of properties that showed the material behaves like a transversely isotropic material. The elastic constants they found were mostly in line with previous data, except for the in-plane shear modulus, which was lower. The Timoshenko shear coefficient varied significantly with fiber orientation and span.