Dynamic analysis of scarf adhesive joints in CFRP composites modified with Al2O3-nanoparticles under fatigue loading at different temperatures

Fatigue tests were conducted on scarf adhesive joints (SAJs) with composite substrates at room temperature (RT) and 50 °C. The adhesive layer was modified with Al2O3-nanoparticles. Dynamic parameters such as damping factor, storage modulus, dissipated energy and potential energy (Up) were measured from the stress–strain hysteresis loops of the SAJs with the aim of knowing which ones are best for early prediction of joint collapse. Incorporation...