Abstract
This paper presents an image analysis on the flexural behaviors of CFRP box beams made of cross ply laminate. Image analysis is conducted in order to measure the deformation field around the center span of CFRP box beams, and strains, principal strains, principal stresses, ant Tsai-Wu failure index are calculated consequently. In the present study, four times more measurement points are employed, and measurement area is enlarged, compared to a previous study. This high density image analysis leads to a clear picture of localized features of strains and stresses around a fracture origin. It is successfully shown that Tsai-Wu failure index obtained through image analysis explains possible fracture origins that mostly match with the origins observed experimentally.
