A Review of Biaxial Test Methods for Composites

This paper will give an overview of the existing biaxial test methods for composite materials from the early beginning till the currently used methods. An evolution in both the biaxial testing capabilities and the applied inspection methods will be shown. The use of composite materials in aerospace, aviation and automotive industry has increased rapidly in recent years, In general, composite laminates are developing multiaxial stress states [1]. However, there is little existing capability to evaluate the full multiaxial (or even the biaxial) response of composite materials, even though large demand for such information exists [2].