Improving Strain Field Measurements for Textile Composites

In this paper, an algorithm based on linear regression in conjunction with the periodical nature of textile composites for improving the strain fields measured by DIC and ESPI techniques is presented. Specimens of textile composites were prepared with regular stacking of layers using vacuum assisted RTM process and then tested under tensile loading within the elastic region. The improvement of strain fields determined by the proposed algorithm is illustrated and the applicability of which is discussed.