The impact of the multiwall carbon nanotubes on the fatigue properties of adhesive joints of 2024-T3 aluminium alloy subjected to peel

Adhesive joints underwent high-cycle fatigue peel strength tests with the limit number of cycles of 2 million. The tests were carried out on the electromagnetic vibration inductor with the resonance frequency of the flexible adhesive-joined element of about 600 Hz. For each variant, the fatigue curve and fatigue lifetime were determined for a given level of stress. Thanks to adding carbon nanotubes to epoxy adhesives, the possibility of increasing the fatigue strength by 28.9% and the fatigue lifetime by about 477.2% was discovered. The fatigue strength tests were preceded by static T-peel tests.