2012/07/28 by F.D. Morinière, René Alderliesten, Mehdi Yarmohammad Tooski +1 · 1 citation
Engineering · Materials Science · #Aluminium #Brittleness #Composite material #Cracking #Delamination (geology) #Epoxy #GLARE #Glass fiber #High-Velocity Impact and Material Behavior #Materials science #Mechanical Behavior of Composites #Perforation #Projectile #Stiffness #Transportation Safety and Impact Analysis #Ultimate tensile strength
paper · pdf · doi:10.2478/s13531-012-0019-z
openalex publication_date 2012/07/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Abstract An experimental study was performed on the repeated low-velocity impact behaviour of GLARE. Damage evolution in the material constituents was characterised with successive number of impacts. Records were correlated with visual inspection, ultrasound C-scan and chemical etching. The stiffness of the plate varied when cumulating the number of impacts. Damage accumulation was limited thanks to the synthesis of unidirectional composite and metal. The glass/epoxy plies with high elastic tensile strength could withstand several impacts before perforation despite delamination growth in the vicinity of the impacted area. The damage tolerant aluminium layers prevented the penetration of the projectile and avoided the expansion of delamination. This efficient mechanism preserved the structural integrity of GLARE until first aluminium cracking at the non-impacted side. Among the different failure modes, plate deformation absorbed most of the impact energy. The findings will support the development of a generic quasi-static analytical model and numerical methods.