New method of identification of mechanical properties of composite materials

A new numerical-experimental method for identification of mechanical proper ties of composite materials is outlined. For the first time it is proposed to use the design of experiments to solve the identification problems. The basic idea of the proposed approach is thai, a simple mathematical model is determined only by the information about the response of the material in t he reference points of the design of experiments. Therefore, a significant reduction (about 50 - 100 times) of calculations of identification function al can be achieved in comparison with using a conventional methods of minim ization. Examples of identification of elastic properties of laminated comp osites from the measured eigenfrequencies of the rectangular plates are dis cussed.