On the fracture behaviour of aerospace-grade Polyether-ether-ketone composite-to-aluminium adhesive joints

The inherently low surface energy of carbon fibre reinforced Polyether-ether-ketone (CF/PEEK) composites results in an extremely compatibility with adhesives. This subsequently causes significant challenges the adhesive joining them to other dissimilar materials. Herein, bonding surfaces CF/PEEK were treated by a high-power UV-irradiation technique prior bonding, attempt develop hybrid composite-to-aluminium joints excellent fracture resistance. mode-I, mode-II and mix-mode behaviour CF/PEEK-to-aluminium bonded two commercial aerospace adhesives was evaluated. Cohesive failure within layers or substrate damage observed all cases. indicated that adhesion between sufficient prevent at composite/adhesive interfaces under different modes. study explored effective route strong tough for applications. Additionally, it revealed form supporting carrier key factor affecting energies joints.