Abstract
Double notched shear (DNS) test were performed with unidirectional CFRP specimen varying the shape of the test specimen. In this study, DNS tests using a unidirectional CFRP specimen having various notch shape and temperature were performed. Results of the DNS test indicated that the in-plane shear strength decreased while test temperature rose. In addition, curvature of notch shape is the smaller, the deterioration of in-plane shear strength is larger. These showed that traditional evaluation using an average shear stress is not quantitative due to stress singularity. Therefore, the in-plane shear strength is evaluated considering stress singularity by means of point stress criterion.
