Investigation of Strain Analysis Method around a Hole in a Plate Using Multi-Rosette Analysis by Digital Image Correlation Method

Abstract

A digital image correlation method (DICM) is a simply measurement method for the surface deformation using only digital images are taken by a digital camera and recently it will be used in many research and development fields. A new analysis method of strain distribution using the DICM will be developed in order to estimate residual stress. For the new analysis method using the DICM, the strain distribution around the hole in the plate will be estimated using the distance change between two points that symmetry with respect to a center point of the hole. In this paper, a strain distribution around the center hole in the steel plate and a strain distribution around the cutting hole in the concrete specimen will be measured to investigate effectiveness of this method.