EFFECT OF AN INTERLAMINAR ADHESIVE ON THE YIELDING BEHAVIOR OF ALUMINUM FIBER-REINFORCED THERMOPLASTIC COMPOSITE LAMINATES/

An adhesive stress-release model is proposed to predict the relief of thermal residual stress due to the presence of an adhesive layer in hy brid aluminum/fiber-reinforced laminates. The model is developed based on the thermal curing temperature and composite constituent propertie s and is used to determine the laminate initial yielding and deformati on behavior. The adhesive layer functions as a compliant layer to rele ase the thermal residual stresses and to delay the yield occurrence, t hus enhancing the laminate's deformation behavior. Compared with avail able experimental data for graphite/PPS and glass/PPS with 2024-T3 or 7075-T6 aluminum hybrid thermoplastic laminates, the proposed model ha s better predictive capabilities than some other commonly used models.