Impact of Unstitched and Stitched Laminates by Line Loading

Results of impact responses for both unstitched and stitched laminates to line-loading at low striking velocities are presented in this paper. These laminates, made of E-glass dry preform and having a (0° 2 /90° 2 ) s stacking sequence, were fabricated by resin transfer molding. For the stitched laminates, Kevlar-29 untwisted roving of 3000 denier was used for the through-the-thickness reinforcement. Impact tests were conducted on a specially...