BEHAVIOR OF STITCHED UNIWEAVE T300/ QY9512 LAMINATES(WITH A HOLE) UNDER IN-PLANE TENSION

To study the open-hole tensile properties of stitched laminates , the open-hole tensile test s were carriedout with uniweave T300/ Q Y9512 laminates , and a finite element method was developed to calculate the open-holetensile properties of stitched laminates. The result s show that stitching has no significant effect on the open-holetensile properties , and the stitching direction does not alter the open-hole tensile st rength.