Prediction of Compressive Strength of CFRP Composite Structures Using Notch Strength

摘要

Composite materials called CFRP (Carbon fiber reinforced plastics) are widely used in the aerospace industry and other-related industries like the automobile and in sports. Nowadays, CFRP composite materials are receiving much attention because of their superior mechanical properties compared to metals and their lightweight, which has contributed to the high fuel efficiency of structures. However, the compressive strength of composite materials is lower than its tensile strength. Structures like airplanes and automobile are assembled with components such as bolts, pins, etc. and the strength of these components, or notches, can degrade. In this study, the compressive strengths of notched flat specimens were compared with those of unnotched flat specimens through compression tests. Also, the compressive strengths of differently shaped structures were compared and verified with those of the specimens.