IDENTIFICATION OF ELASTIC PROPERTIES OF COMPOSITES BY METHOD OF PLANNING OF EXPERIMENTS

A numerical-experimental method for identification of the elastic prop erties of laminated polymeric composites from the experimental results for eigenfrequencies of the plates is developed. The elastic properti es of single layer of the laminated plate are the parameters to be ide ntified. The approach is based on the finite element simulation of the vibration problem. By using the method of planning of experiments and the data obtained by the finite element solution simple models contai ning the parameters to be identified have been obtained. These simple models and the data of the vibration experiment are used to identify t he elastic properties of the layer. Good agreement between the referen ce solutions and the results obtained by the method of planning of exp eriments have been observed. The proposed approach can be used as a no n-destructive method in order to determine the elastic properties of t he layer in the laminated composites. (C) 1998 Published by Elsevier S cience Ltd. All rights reserved.