P. Jakubczak, J. Bieniaś, B. Surowska. Multiple impact of FML

Due to excellent properties, FMLs have been applied in primary structures of several aircrafts. One of the most important advantage is high impact resistance of FMLs. The goal of the research was to carry out the analysis of the impact resistance of selected FMLs and investigation of influence of multiple impact on their failure after this kind of loads. The dropweight tower and ASTM standards were used. FMLs has good impact resistance to multiple impact. Damage of fibre metal laminates is growing quite stably after each impact. Damage in fibre metal laminates after multiple impact is characterized by deformation and delaminations in composite and at the metal-composite interface.