An Experimental Investigation on Dynamic Performance of Interference-fit Composite Joints with Blind Bolt and High Lock Bolt

Abstract

The experimental investigation were conducted in order to study the dynamic strength of the mechanically fastened composite joints, involving interference-fit joints with blind bolt and sliding-fit joints with high lock bolt. The joint type of the specimens researched was single-bolt, double-lap, which was a standard test configuration in ASTM for composite joints. Experimental results showed that the fatigue performance of the blind bolted joint was better than that of the high-locking bolted joint. The fatigue life of the blind bolted joints was 10-100 times higher than that of the high-locking bolted joint under the same cyclic stress, and the limit fatigue strength of the blind bolted joints was over 50MPa higher than hat of the high-locking bolted joints.

Progressive Failure Analysis and Strength Prediction of Composite Structures Interference-fitted with Mechanical Connections

“…During the gradual growth of load, each layer of laminated plate extended along the bearing direction. After reaching the limited load, the bearing damage occurred in large area, which matched with the test result [8] of bearing failure mode.…”