DefinePK

Abstract

The aim of this work is to create an experimental-numerical technique for elastic parameters identification of laminated polymer composites using experimental modal analysis. The object of this research is laminated carbon fiber reinforced composite based on an equally strong carbon fabric and epoxy binder. Experimental determination of natural frequencies and corresponding vibration modes was performed using 3D scanning laser vibrometry. The finite element calculation and quasi-random search optimization technique can be effectively used to solve the identification problem. The evaluation by independent experiments showed that the error of the natural frequencies, determined from the obtained elasticity characteristics, lies within 5%. The described technique can be recommended for determining of elasticity parameters necessary for calculating the modal characteristics of structure elements made from laminated carbon fiber.