Effect of temperature on the fatigue performance and failure mechanism of a flexible adhesive butt joint

To study the influence of temperature on the fatigue performance of adhesive structures, polyurethane adhesive was used to make butt joints (BJs). Using an environmental-fatigue coupling loading devices, the temperature points of −40, −10, 20, 50 and 80°C were selected to carry out tension-tension fatigue tests on BJs. The S-N curves of the joints were obtained. The quasi-static and fatigue failure sections of the BJs were observed by...