MECHANICAL-BEHAVIOR AND FRACTURE MECHANISM IN FLAT BRAIDED COMPOSITES.3. MECHANICALLY FASTENED JOINT IN FLAT BRAIDED BAR

In this work, fracture behavior and strength of mechanically fastened joint in the flat braided bar were studied. Joint strength of the brai ded flat bar with the braided hole was higher than that of the braided flat bar with the machined hole. In the braided hole, although joint geometry decreased, the failure mode was safe bearing failure. The cal culated results agreed well with the experimental results, and it was possible to estimate the fracture behavior and joint strength of the b raided flat bar with a circular hole by this analysis method. It is be tter for joint design that the fibers form the braided hole, around th e hole, and form a reinforcement configuration with high modulus arid strength as a unidirectional composite.