The investigation of buckling response and damage of thin cross-ply CFRP laminates subjected to CAI

The study aimed to analyse the buckling behaviour and damage mechanics of thin, cross-ply CFRP plates after impact by using progressive deformation analysis. Thin-walled CFRP was chosen as the one presenting stability issues and delamination susceptibility due to slender geometry and low out-of-plane strength. The study showed, that the buckling behaviour of laminates during CAI is determined by the initial damage character caused by impact. As the main source of laminate stiffness loss, the characteristic delaminations and fibre cracks were identified. The nature of delamination growth and cracks causes were described and proven.

Automated summary

The study aimed to analyse the buckling behaviour and damage mechanics of thin, cross-ply CFRP plates after impact by using progressive deformation analysis. Thin-walled CFRP was chosen as the one presenting stability issues and delamination susceptibility due to slender geometry and low out-of-plane strength. The study showed that the buckling behaviour of laminates during CAI is determined by the initial damage character caused by impact, with characteristic delaminations and fibre cracks identified as the main source of stiffness loss. The nature of delamination growth and cracks causes were described and proven.