Akademik Veri Yönetim Sistemi
ENGINEERING RESEARCH EXPRESS, cilt.8, sa.6, 2026 (ESCI)
This study experimentally investigates the influence of fiber orientation angles on the low-velocity impact (LVI) response of E-glass woven fabric-reinforced epoxy composites. Four distinct configurations-[0/90/0/ 90 & strns; ]s, [0/45/90/ 45 & strns; ]s, [0/30/60/ 90 & strns; ]s, [0/15/30/45/60/75/90] orientations-were fabricated by varying the layer orientations from 90 degrees down to 15 degrees. The mechanical performance was evaluated based on contact force, striker velocity, energy absorption capacity, and damage mechanisms under impact energies ranging from 10 J to 50 J. The results indicate that decreasing the orientation angle from 90 degrees to 30 degrees yields a substantial improvement in impact resistance and energy dissipation. However, further reductions beyond 30 degrees did not yield statistically significant performance gains. These findings reveal an optimal ply orientation range for enhancing the LVI performance of woven glass/epoxy composites and provide practical guidance for designing impact-resistant composite laminates.