抄録
Identification of in-plane and through-thickness material properties of a unidirectional carbon fiber reinforced plastics (CFRP) plate from displacement fields is performed using a virtual fields method. The displacement fields are obtained through the measurement using digital image correlation. In order to obtain appropriate identification results, the measured displacements are reasonably smoothed and the optimized virtual displacement fields are determined for minimizing the influence of the measurement errors. The material properties are determined by applying this method to the displacement fields obtained for the beam specimen under three-point bending. Results show that the orthotropic material properties can be identified from the measured displacement fields. As the orthotropic material properties are obtained from measured displacement distributions, this method is expected to be applied to various materials.
