Effect of temperature and geometrical parameters on mechanical properties of pin-loaded fiber metal laminate joints

To investigate the effect of temperature and geometrical parameters on the mechanical properties of pin-loaded fiber metal laminate joints, experiments were performed by means of static tensile tests. The joints of varied width-to-diameter ratios (W/D = 2, 3, 4) and edge distance-to-diameter ratios (E/D = 1, 2, 3, 4) were experimentally investigated at room temperature. It was found that ultimate failure load increased with the increase of the ratio of W/D or E/D. The dominant failure mode was bearing failure. Shear-out and net-tension failures were more easily caused as the pin hole was located closer to the edge of the specimen. Also, to explore the effect of temperature on the bearing responses of fiber metal laminate joints, three typical joint configurations (W/D = 4, E/D = 4; W/D = 4, E/D = 1; and W/D = 2, E/D = 4) were tested at high temperature, which ranged from 40℃ to 120℃. The test results clearly show that failure loads of joint decrease with the increase of the test temperature. The failure modes of the fiber metal laminate joints were predominantly affected by high test temperatures. The present work provides supporting information for the design of the fiber metal laminate joints.