Perpustakaan Digital ITB

Composite materials have become essential in modern engineering due to their exceptional strength-to-weight ratio and adaptability. Among these, carbon/epoxy composites are widely utilized in high-velocity impact application. However, the need of better performing composites is growing. One prominent technique is to insert interface layer between the plies. Hence, the effect of Polycarbonate (PC) and Polyvinyl Butheral-Phenolic (PVB) interface addition to the ballistic performance of Carbon/Epoxy composites is studied. Using numerical simulations in Abaqus CAE, meso-scale models were impacted with 9 mm Pindad MU1-TJ projectile at initial velocity of 350 m/s to assess energy absorption and damage mechanisms. Mesh sensitivity analysis and model validation was carried to ensure the accuracy of the results. Each model was successfully simulated and analyzed. The results indicate that woven carbon/epoxy composites effectively dissipate impact energy through fiber failure, matrix cracking, and delamination, with an energy absorption of approximately 58–59 J. Interface modifications were explored to optimize performance, revealing that checkerboardpatterned interfaces significantly improve damage control and energy dissipation. Among the tested configurations, the PCCB-2N demonstrated the highest energy absorption (59.6 J) and superior damage mitigation.